diff --git a/apps/client/src/network/handlers/GameHandler.ts b/apps/client/src/network/handlers/GameHandler.ts
index b337cd4..21a033f 100644
--- a/apps/client/src/network/handlers/GameHandler.ts
+++ b/apps/client/src/network/handlers/GameHandler.ts
@@ -8,6 +8,7 @@
 import type {
   CurrentPlayersPayload,
   GameStartPayload,
+  MovePayload,
   NewPlayerPayload,
   RemovePlayerPayload,
   UpdateMapCellsPayload,
@@ -72,7 +73,7 @@
       socket.off(protocol.SocketEvents.GAME_START, callback);
     },
     sendMove: (x, y) => {
-      const payload = { x, y };
+      const payload: MovePayload = { x, y };
       socket.emit(protocol.SocketEvents.MOVE, payload);
     },
     readyForGame: () => {
diff --git a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
index fdb544f..5858507 100644
--- a/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
+++ b/apps/server/src/domains/game/application/ports/gameUseCasePorts.ts
@@ -8,6 +8,7 @@
   roomTypes,
   CurrentPlayersPayload,
   GameStartPayload,
+  PongPayload,
   RemovePlayerPayload,
   UpdateMapCellsPayload,
   UpdatePlayersPayload,
@@ -54,7 +55,7 @@
 
 /** ゲーム系ユースケースが利用する送信出力ポート */
 export interface GameOutputPort {
-  publishPongToSocket(payload: { clientTime: number; serverTime: number }): void;
+  publishPongToSocket(payload: PongPayload): void;
   publishUpdatePlayersToRoom(
     roomId: roomTypes.Room["roomId"],
     players: UpdatePlayersPayload
diff --git a/apps/server/src/network/handlers/game/createGameOutputAdapter.ts b/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
index 4d92e41..a81719e 100644
--- a/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
+++ b/apps/server/src/network/handlers/game/createGameOutputAdapter.ts
@@ -6,6 +6,7 @@
 import { protocol } from "@repo/shared";
 import type {
   GameStartPayload,
+  PongPayload,
   roomTypes,
   CurrentPlayersPayload,
   RemovePlayerPayload,
@@ -17,7 +18,6 @@
 import type { CommonHandlerContext } from "../CommonHandler";
 
 type RoomId = roomTypes.Room["roomId"];
-type PongPayload = { clientTime: number; serverTime: number };
 
 /** ゲーム出力アダプターのインターフェース */
 export type GameOutputAdapter = Omit<GameOutputPort, "publishPlayerRemovedToRoom">;
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index 6141266..f832b8e 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -11,7 +11,9 @@
 export type {
 	CurrentPlayersPayload,
 	GameStartPayload,
+	MovePayload,
 	NewPlayerPayload,
+	PongPayload,
 	RemovePlayerPayload,
 	UpdateMapCellsPayload,
 	UpdatePlayersPayload,
diff --git a/packages/shared/src/protocol/events.ts b/packages/shared/src/protocol/events.ts
index 99a17ff..5cb3b39 100644
--- a/packages/shared/src/protocol/events.ts
+++ b/packages/shared/src/protocol/events.ts
@@ -4,7 +4,7 @@
  * クライアントとサーバー間のイベント契約を共有する
  */
 import type { TickData } from "../domains/game/game.type";
-import type { PlayerData } from "../domains/player/player.type";
+import type { MovePayload as PlayerMovePayload, PlayerData } from "../domains/player/player.type";
 
 /** ソケットイベント名の一覧定数 */
 export const SocketEvents = {
@@ -52,3 +52,12 @@
 
 /** GAME_START イベントで送受信するゲーム開始情報 */
 export type GameStartPayload = { startTime: number };
+
+/** MOVE イベントで送受信する移動入力情報 */
+export type MovePayload = PlayerMovePayload;
+
+/** PONG イベントで送受信する時刻同期レスポンス */
+export type PongPayload = {
+  clientTime: number;
+  serverTime: number;
+};