diff --git a/apps/server/src/application/coordinators/startGameCoordinator.ts b/apps/server/src/application/coordinators/startGameCoordinator.ts
index 6bf674a..c3de006 100644
--- a/apps/server/src/application/coordinators/startGameCoordinator.ts
+++ b/apps/server/src/application/coordinators/startGameCoordinator.ts
@@ -9,7 +9,7 @@
 } from "@server/domains/game/application/ports/gameUseCasePorts";
 import { startGameUseCase } from "@server/domains/game/application/useCases/startGameUseCase";
 import { logEvent } from "@server/logging/logEvent";
-import { gameUseCaseLogEvents } from "@server/logging/logEvents";
+import { gameUseCaseLogEvents, logResults } from "@server/logging/logEvents";
 import { roomConsts } from "@repo/shared";
 
 type StartGameCoordinatorParams = {
@@ -36,7 +36,7 @@
   if (!room) {
     logEvent("GameUseCase", {
       event: gameUseCaseLogEvents.START_GAME,
-      result: "ignored_no_room",
+      result: logResults.IGNORED_NO_ROOM,
       socketId: ownerId,
     });
     return;
@@ -45,7 +45,7 @@
   if (room.status === roomConsts.RoomPhase.PLAYING) {
     logEvent("GameUseCase", {
       event: gameUseCaseLogEvents.START_GAME,
-      result: "ignored_already_playing",
+      result: logResults.IGNORED_ALREADY_PLAYING,
       roomId: room.roomId,
       socketId: ownerId,
     });
@@ -56,7 +56,7 @@
   if (!updatedRoom) {
     logEvent("GameUseCase", {
       event: gameUseCaseLogEvents.START_GAME,
-      result: "ignored_room_not_found",
+      result: logResults.IGNORED_ROOM_NOT_FOUND,
       roomId: room.roomId,
       socketId: ownerId,
     });
@@ -65,7 +65,7 @@
 
   logEvent("GameUseCase", {
     event: gameUseCaseLogEvents.START_GAME,
-    result: "accepted",
+    result: logResults.ACCEPTED,
     roomId: updatedRoom.roomId,
     socketId: ownerId,
     totalPlayers: updatedRoom.players.length,
diff --git a/apps/server/src/domains/game/application/services/GamePlayerOperationService.ts b/apps/server/src/domains/game/application/services/GamePlayerOperationService.ts
index 787b4f4..2db713e 100644
--- a/apps/server/src/domains/game/application/services/GamePlayerOperationService.ts
+++ b/apps/server/src/domains/game/application/services/GamePlayerOperationService.ts
@@ -3,7 +3,7 @@
  * ゲームセッション内のプレイヤー移動と離脱操作を管理する
  */
 import { logEvent } from "@server/logging/logEvent";
-import { gameDomainLogEvents } from "@server/logging/logEvents";
+import { gameDomainLogEvents, logResults } from "@server/logging/logEvents";
 import { GameRoomSession } from "./GameRoomSession";
 
 type SessionStore = Map<string, GameRoomSession>;
@@ -23,7 +23,7 @@
     if (!roomId) {
       logEvent("GamePlayerOperationService", {
         event: gameDomainLogEvents.PLAYER_MOVE,
-        result: "ignored_player_not_in_session",
+        result: logResults.IGNORED_PLAYER_NOT_IN_SESSION,
         socketId: id,
       });
       return;
@@ -37,7 +37,7 @@
     if (!roomId) {
       logEvent("GamePlayerOperationService", {
         event: gameDomainLogEvents.PLAYER_REMOVE,
-        result: "ignored_player_not_in_session",
+        result: logResults.IGNORED_PLAYER_NOT_IN_SESSION,
         socketId: id,
       });
       return;
@@ -59,7 +59,7 @@
       this.roomToPlayers.delete(roomId);
       logEvent("GamePlayerOperationService", {
         event: gameDomainLogEvents.PLAYER_REMOVE,
-        result: "session_disposed_empty_room",
+        result: logResults.SESSION_DISPOSED_EMPTY_ROOM,
         roomId,
         socketId: id,
       });
diff --git a/apps/server/src/domains/game/application/services/GameRoomSession.ts b/apps/server/src/domains/game/application/services/GameRoomSession.ts
index 94ee207..cbf33d2 100644
--- a/apps/server/src/domains/game/application/services/GameRoomSession.ts
+++ b/apps/server/src/domains/game/application/services/GameRoomSession.ts
@@ -3,7 +3,7 @@
  * 1ルーム分のゲーム進行状態とゲームループ実行を管理する
  */
 import { logEvent } from "@server/logging/logEvent";
-import { gameDomainLogEvents } from "@server/logging/logEvents";
+import { gameDomainLogEvents, logResults } from "@server/logging/logEvents";
 import type { gameTypes } from "@repo/shared";
 import { GameLoop } from "../../loop/GameLoop";
 import { Player } from "../../entities/player/Player.js";
@@ -61,7 +61,7 @@
     if (!player) {
       logEvent("GameRoomSession", {
         event: gameDomainLogEvents.MOVE,
-        result: "ignored_player_not_found",
+        result: logResults.IGNORED_PLAYER_NOT_FOUND,
         roomId: this.roomId,
         socketId: id,
       });
@@ -71,7 +71,7 @@
     if (!isValidPosition(x, y)) {
       logEvent("GameRoomSession", {
         event: gameDomainLogEvents.MOVE,
-        result: "ignored_invalid_payload",
+        result: logResults.IGNORED_INVALID_PAYLOAD,
         roomId: this.roomId,
         socketId: id,
       });
diff --git a/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts b/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts
index 6381a47..1bd9eb0 100644
--- a/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts
+++ b/apps/server/src/domains/game/application/services/GameSessionLifecycleService.ts
@@ -5,7 +5,7 @@
 import { config } from "@repo/shared";
 import type { gameTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
-import { gameDomainLogEvents } from "@server/logging/logEvents";
+import { gameDomainLogEvents, logResults } from "@server/logging/logEvents";
 import { GameRoomSession } from "./GameRoomSession";
 
 type SessionStore = Map<string, GameRoomSession>;
@@ -37,7 +37,7 @@
     if (this.sessions.has(roomId)) {
       logEvent("GameSessionLifecycleService", {
         event: gameDomainLogEvents.SESSION_START,
-        result: "ignored_already_running",
+        result: logResults.IGNORED_ALREADY_RUNNING,
         roomId,
       });
       return;
@@ -61,7 +61,7 @@
 
     logEvent("GameSessionLifecycleService", {
       event: gameDomainLogEvents.SESSION_START,
-      result: "started",
+      result: logResults.STARTED,
       roomId,
       playerCount: playerIds.length,
     });
diff --git a/apps/server/src/domains/game/application/useCases/disconnectUseCase.ts b/apps/server/src/domains/game/application/useCases/disconnectUseCase.ts
index f78a1ce..ce661a4 100644
--- a/apps/server/src/domains/game/application/useCases/disconnectUseCase.ts
+++ b/apps/server/src/domains/game/application/useCases/disconnectUseCase.ts
@@ -4,7 +4,7 @@
  */
 import type { DisconnectPlayerPort, GameOutputPort } from "../ports/gameUseCasePorts";
 import { logEvent } from "@server/logging/logEvent";
-import { gameUseCaseLogEvents } from "@server/logging/logEvents";
+import { gameUseCaseLogEvents, logResults } from "@server/logging/logEvents";
 
 type DisconnectUseCaseParams = {
   gameManager: DisconnectPlayerPort;
@@ -28,7 +28,7 @@
 
   logEvent("GameUseCase", {
     event: gameUseCaseLogEvents.DISCONNECT,
-    result: "player_removed",
+    result: logResults.PLAYER_REMOVED,
     socketId: playerId,
   });
 };
diff --git a/apps/server/src/domains/game/application/useCases/readyForGameUseCase.ts b/apps/server/src/domains/game/application/useCases/readyForGameUseCase.ts
index 1d5321c..798739c 100644
--- a/apps/server/src/domains/game/application/useCases/readyForGameUseCase.ts
+++ b/apps/server/src/domains/game/application/useCases/readyForGameUseCase.ts
@@ -5,7 +5,7 @@
 import type { ReadyForGamePort } from "../ports/gameUseCasePorts";
 import type { GameOutputPort } from "../ports/gameUseCasePorts";
 import { logEvent } from "@server/logging/logEvent";
-import { gameUseCaseLogEvents } from "@server/logging/logEvents";
+import { gameUseCaseLogEvents, logResults } from "@server/logging/logEvents";
 
 type ReadyForGameUseCaseParams = {
   socketId: string;
@@ -25,7 +25,7 @@
     output.publishCurrentPlayersToSocket([]);
     logEvent("GameUseCase", {
       event: gameUseCaseLogEvents.READY_FOR_GAME,
-      result: "ignored_missing_room",
+      result: logResults.IGNORED_MISSING_ROOM,
       socketId,
     });
     return;
@@ -36,7 +36,7 @@
 
   logEvent("GameUseCase", {
     event: gameUseCaseLogEvents.READY_FOR_GAME,
-    result: "received",
+    result: logResults.RECEIVED,
     socketId,
     roomId,
     totalPlayers: roomPlayers.length,
@@ -50,7 +50,7 @@
   output.publishGameStartToSocket({ startTime });
   logEvent("GameUseCase", {
     event: gameUseCaseLogEvents.GAME_START,
-    result: "emitted",
+    result: logResults.EMITTED,
     socketId,
     roomId,
     startTime,
diff --git a/apps/server/src/domains/game/application/useCases/startGameUseCase.ts b/apps/server/src/domains/game/application/useCases/startGameUseCase.ts
index b02cf59..94316bd 100644
--- a/apps/server/src/domains/game/application/useCases/startGameUseCase.ts
+++ b/apps/server/src/domains/game/application/useCases/startGameUseCase.ts
@@ -4,7 +4,7 @@
  */
 import type { GameOutputPort, StartGamePort } from "../ports/gameUseCasePorts";
 import { logEvent } from "@server/logging/logEvent";
-import { gameUseCaseLogEvents } from "@server/logging/logEvents";
+import { gameUseCaseLogEvents, logResults } from "@server/logging/logEvents";
 
 type StartGameUseCaseParams = {
   roomId: string;
@@ -43,7 +43,7 @@
     () => {
       logEvent("GameUseCase", {
         event: gameUseCaseLogEvents.GAME_END,
-        result: "emitted",
+        result: logResults.EMITTED,
         roomId,
         reason: "duration_elapsed",
       });
diff --git a/apps/server/src/domains/game/loop/GameLoop.ts b/apps/server/src/domains/game/loop/GameLoop.ts
index 86d4001..599147b 100644
--- a/apps/server/src/domains/game/loop/GameLoop.ts
+++ b/apps/server/src/domains/game/loop/GameLoop.ts
@@ -8,7 +8,7 @@
 import { config } from "@repo/shared";
 import type { gameTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
-import { gameDomainLogEvents } from "@server/logging/logEvents";
+import { gameDomainLogEvents, logResults } from "@server/logging/logEvents";
 
 /** ルーム内ゲーム進行を定周期で実行するループ管理クラス */
 export class GameLoop {
@@ -43,7 +43,7 @@
 
     logEvent("GameLoop", {
       event: gameDomainLogEvents.GAME_LOOP,
-      result: "started",
+      result: logResults.STARTED,
       roomId: this.roomId,
       tickRate: this.tickRate,
     });
@@ -153,7 +153,7 @@
 
     logEvent("GameLoop", {
       event: gameDomainLogEvents.GAME_LOOP,
-      result: "stopped",
+      result: logResults.STOPPED,
       roomId: this.roomId,
       elapsedMs: Math.max(0, Math.round(performance.now() - this.startMonotonicTimeMs)),
     });
diff --git a/apps/server/src/domains/room/application/services/RoomExitService.ts b/apps/server/src/domains/room/application/services/RoomExitService.ts
index 8b94508..7cb0da0 100644
--- a/apps/server/src/domains/room/application/services/RoomExitService.ts
+++ b/apps/server/src/domains/room/application/services/RoomExitService.ts
@@ -4,7 +4,7 @@
  */
 import type { roomTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
-import { roomDomainLogEvents } from "@server/logging/logEvents";
+import { logResults, roomDomainLogEvents } from "@server/logging/logEvents";
 
 /** 退出要求に応じてプレイヤー削除とルーム整理を行うサービス */
 export class RoomExitService {
@@ -22,7 +22,7 @@
       room.players.splice(playerIndex, 1);
       logEvent("RoomExitService", {
         event: roomDomainLogEvents.PLAYER_LEAVE,
-        result: "removed",
+        result: logResults.REMOVED,
         roomId,
         socketId,
         totalPlayers: room.players.length,
@@ -32,7 +32,7 @@
         this.rooms.delete(roomId);
         logEvent("RoomExitService", {
           event: roomDomainLogEvents.ROOM_DELETE,
-          result: "deleted",
+          result: logResults.DELETED,
           roomId,
           socketId,
         });
@@ -44,7 +44,7 @@
         room.players[0].isOwner = true;
         logEvent("RoomExitService", {
           event: roomDomainLogEvents.OWNER_TRANSFER,
-          result: "transferred",
+          result: logResults.TRANSFERRED,
           roomId,
           socketId,
           newOwnerId: room.ownerId,
diff --git a/apps/server/src/domains/room/application/services/RoomJoinService.ts b/apps/server/src/domains/room/application/services/RoomJoinService.ts
index cb21ffd..b0e9275 100644
--- a/apps/server/src/domains/room/application/services/RoomJoinService.ts
+++ b/apps/server/src/domains/room/application/services/RoomJoinService.ts
@@ -5,7 +5,7 @@
 import { config, roomConsts } from "@repo/shared";
 import type { roomTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
-import { roomDomainLogEvents } from "@server/logging/logEvents";
+import { logResults, roomDomainLogEvents } from "@server/logging/logEvents";
 import type { JoinRoomResult } from "../ports/roomUseCasePorts";
 
 /** 参加要求に応じてルーム作成と参加者追加を行うサービス */
@@ -25,7 +25,7 @@
       this.rooms.set(roomId, room);
       logEvent("RoomJoinService", {
         event: roomDomainLogEvents.ROOM_CREATE,
-        result: "created",
+        result: logResults.CREATED,
         roomId,
         socketId,
         ownerId: socketId,
@@ -37,7 +37,7 @@
     if (alreadyJoined) {
       logEvent("RoomJoinService", {
         event: roomDomainLogEvents.PLAYER_JOIN,
-        result: "ignored_duplicate",
+        result: logResults.IGNORED_DUPLICATE,
         roomId,
         socketId,
         totalPlayers: room.players.length,
@@ -49,7 +49,7 @@
     if (room.players.length >= room.maxPlayers) {
       logEvent("RoomJoinService", {
         event: roomDomainLogEvents.PLAYER_JOIN,
-        result: "ignored_room_full",
+        result: logResults.IGNORED_ROOM_FULL,
         roomId,
         socketId,
         maxPlayers: room.maxPlayers,
@@ -68,7 +68,7 @@
     room.players.push(newPlayer);
     logEvent("RoomJoinService", {
       event: roomDomainLogEvents.PLAYER_JOIN,
-      result: "joined",
+      result: logResults.JOINED,
       roomId,
       socketId,
       playerName,
diff --git a/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts b/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
index 6da1059..b004e51 100644
--- a/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
+++ b/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
@@ -9,7 +9,7 @@
   RoomOutputPort,
 } from "../ports/roomUseCasePorts";
 import { logEvent } from "@server/logging/logEvent";
-import { roomUseCaseLogEvents } from "@server/logging/logEvents";
+import { logResults, roomUseCaseLogEvents } from "@server/logging/logEvents";
 
 type JoinRoomUseCaseParams = {
   roomManager: JoinRoomPort;
@@ -28,7 +28,7 @@
   const { roomId, playerName } = data;
   logEvent("RoomUseCase", {
     event: roomUseCaseLogEvents.JOIN_ROOM,
-    result: "received",
+    result: logResults.RECEIVED,
     roomId,
     socketId,
     playerName,
@@ -43,7 +43,7 @@
 
     logEvent("RoomUseCase", {
       event: roomUseCaseLogEvents.JOIN_ROOM,
-      result: "rejected",
+      result: logResults.REJECTED,
       reason: joinResult.status,
       roomId,
       socketId,
diff --git a/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts b/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts
index 919fdd9..4a56748 100644
--- a/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts
+++ b/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts
@@ -5,7 +5,7 @@
 import type { DisconnectRoomPort } from "../ports/roomUseCasePorts";
 import type { RoomOutputPort } from "../ports/roomUseCasePorts";
 import { logEvent } from "@server/logging/logEvent";
-import { roomUseCaseLogEvents } from "@server/logging/logEvents";
+import { logResults, roomUseCaseLogEvents } from "@server/logging/logEvents";
 
 type RoomDisconnectUseCaseParams = {
   roomManager: DisconnectRoomPort;
@@ -22,7 +22,7 @@
   const updatedRooms = roomManager.removePlayer(socketId);
   logEvent("RoomUseCase", {
     event: roomUseCaseLogEvents.DISCONNECT,
-    result: "processed",
+    result: logResults.PROCESSED,
     socketId,
     updatedRoomCount: updatedRooms.length,
   });
@@ -31,7 +31,7 @@
     output.publishRoomUpdateToRoom(room.roomId, room);
     logEvent("RoomUseCase", {
       event: roomUseCaseLogEvents.ROOM_UPDATE,
-      result: "emitted",
+      result: logResults.EMITTED,
       roomId: room.roomId,
       socketId,
       ownerId: room.ownerId,
diff --git a/apps/server/src/logging/logEvents.ts b/apps/server/src/logging/logEvents.ts
index 55470da..0f62b6e 100644
--- a/apps/server/src/logging/logEvents.ts
+++ b/apps/server/src/logging/logEvents.ts
@@ -37,3 +37,35 @@
   ROOM_DELETE: "ROOM_DELETE",
   OWNER_TRANSFER: "OWNER_TRANSFER",
 } as const;
+
+/** ログ出力で利用する結果値の共通定数 */
+export const logResults = {
+  ACCEPTED: "accepted",
+  CONNECTED: "connected",
+  CREATED: "created",
+  DELETED: "deleted",
+  DISCONNECTED: "disconnected",
+  EMITTED: "emitted",
+  IGNORED_ALREADY_PLAYING: "ignored_already_playing",
+  IGNORED_ALREADY_RUNNING: "ignored_already_running",
+  IGNORED_DUPLICATE: "ignored_duplicate",
+  IGNORED_INVALID_PAYLOAD: "ignored_invalid_payload",
+  IGNORED_MISSING_ROOM: "ignored_missing_room",
+  IGNORED_NO_ROOM: "ignored_no_room",
+  IGNORED_PLAYER_NOT_FOUND: "ignored_player_not_found",
+  IGNORED_PLAYER_NOT_IN_SESSION: "ignored_player_not_in_session",
+  IGNORED_ROOM_FULL: "ignored_room_full",
+  IGNORED_ROOM_NOT_FOUND: "ignored_room_not_found",
+  JOINED: "joined",
+  PLAYER_REMOVED: "player_removed",
+  PROCESSED: "processed",
+  RECEIVED: "received",
+  REJECTED: "rejected",
+  REJECTED_DUPLICATE: "rejected_duplicate",
+  REJECTED_ROOM_FULL: "rejected_room_full",
+  REMOVED: "removed",
+  SESSION_DISPOSED_EMPTY_ROOM: "session_disposed_empty_room",
+  STARTED: "started",
+  STOPPED: "stopped",
+  TRANSFERRED: "transferred",
+} as const;
diff --git a/apps/server/src/network/handlers/payloadGuard.ts b/apps/server/src/network/handlers/payloadGuard.ts
index 474bde1..38f6c66 100644
--- a/apps/server/src/network/handlers/payloadGuard.ts
+++ b/apps/server/src/network/handlers/payloadGuard.ts
@@ -4,6 +4,7 @@
  */
 import { protocol } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
+import { logResults } from "@server/logging/logEvents";
 
 type PayloadValidator<TPayload> = (value: unknown) => value is TPayload;
 type SocketEventName = (typeof protocol.SocketEvents)[keyof typeof protocol.SocketEvents];
@@ -24,7 +25,7 @@
 
     logEvent("Network", {
       event,
-      result: "ignored_invalid_payload",
+      result: logResults.IGNORED_INVALID_PAYLOAD,
       socketId,
     });
 
diff --git a/apps/server/src/network/handlers/registerConnectionHandlers.ts b/apps/server/src/network/handlers/registerConnectionHandlers.ts
index a4d6a7b..81064d8 100644
--- a/apps/server/src/network/handlers/registerConnectionHandlers.ts
+++ b/apps/server/src/network/handlers/registerConnectionHandlers.ts
@@ -6,6 +6,7 @@
 import { protocol } from "@repo/shared";
 import { disconnectCoordinator } from "@server/application/coordinators/disconnectCoordinator";
 import { logEvent } from "@server/logging/logEvent";
+import { logResults } from "@server/logging/logEvents";
 import { registerGameHandlers } from "./GameHandler";
 import { registerRoomHandlers } from "./RoomHandler";
 import { createGameDisconnectOutputAdapter } from "./game/createGameOutputAdapter";
@@ -27,7 +28,7 @@
     // 接続ログを記録してドメイン別ハンドラを登録する
     logEvent("Network", {
       event: protocol.SocketEvents.CONNECT,
-      result: "connected",
+      result: logResults.CONNECTED,
       socketId: socket.id,
     });
 
@@ -38,7 +39,7 @@
       // 切断ログ記録後にドメイン別の後処理を実行する
       logEvent("Network", {
         event: protocol.SocketEvents.DISCONNECT,
-        result: "disconnected",
+        result: logResults.DISCONNECTED,
         socketId: socket.id,
       });
 
diff --git a/apps/server/src/network/handlers/room/registerRoomHandlers.ts b/apps/server/src/network/handlers/room/registerRoomHandlers.ts
index 4d7847a..0974519 100644
--- a/apps/server/src/network/handlers/room/registerRoomHandlers.ts
+++ b/apps/server/src/network/handlers/room/registerRoomHandlers.ts
@@ -7,6 +7,7 @@
 import type { JoinRoomPort } from "@server/domains/room/application/ports/roomUseCasePorts";
 import { joinRoomUseCase } from "@server/domains/room/application/useCases/joinRoomUseCase";
 import { logEvent } from "@server/logging/logEvent";
+import { logResults } from "@server/logging/logEvents";
 import { createCommonHandlerContext } from "@server/network/handlers/CommonHandler";
 import { createPayloadGuard } from "@server/network/handlers/payloadGuard";
 import { createServerSocketOnBridge } from "@server/network/handlers/socketEventBridge";
@@ -53,7 +54,7 @@
       case "full":
         logEvent("Network", {
           event: protocol.SocketEvents.JOIN_ROOM,
-          result: "rejected_room_full",
+          result: logResults.REJECTED_ROOM_FULL,
           roomId,
           socketId: socket.id,
         });
@@ -62,7 +63,7 @@
       case "duplicate":
         logEvent("Network", {
           event: protocol.SocketEvents.JOIN_ROOM,
-          result: "rejected_duplicate",
+          result: logResults.REJECTED_DUPLICATE,
           roomId,
           socketId: socket.id,
         });
@@ -73,7 +74,7 @@
         roomOutputAdapter.publishRoomUpdateToRoom(roomId, joinResult.room);
         logEvent("RoomUseCase", {
           event: protocol.SocketEvents.ROOM_UPDATE,
-          result: "emitted",
+          result: logResults.EMITTED,
           roomId,
           socketId: socket.id,
           ownerId: joinResult.room.ownerId,