diff --git a/apps/server/src/domains/room/RoomManager.ts b/apps/server/src/domains/room/RoomManager.ts
index defaf38..ff3bb62 100644
--- a/apps/server/src/domains/room/RoomManager.ts
+++ b/apps/server/src/domains/room/RoomManager.ts
@@ -1,8 +1,13 @@
+/**
+ * RoomManager
+ * ルーム状態の保持とルーム操作サービスへの委譲を担うマネージャ
+ */
 import type { roomTypes } from "@repo/shared";
 import { RoomJoinService } from "./application/services/RoomJoinService";
 import { RoomExitService } from "./application/services/RoomExitService";
 import { RoomQueryService } from "./application/services/RoomQueryService";
 
+/** ルーム操作の公開インターフェースを提供するマネージャ */
 export class RoomManager {
   private rooms: Map<string, roomTypes.Room> = new Map();
   private roomJoinService: RoomJoinService;
@@ -15,17 +20,17 @@
     this.roomQueryService = new RoomQueryService(this.rooms);
   }
 
-  // ルームにプレイヤーを追加（なければ作成）
+  // ルームにプレイヤーを追加する，ルームが未作成なら新規作成する
   public addPlayerToRoom(roomId: string, socketId: string, playerName: string): roomTypes.Room {
     return this.roomJoinService.addPlayerToRoom(roomId, socketId, playerName);
   }
 
-  // プレイヤーをルームから削除し、更新があったルームの配列を返す
+  // プレイヤーをルームから削除し，更新が発生したルーム配列を返す
   public removePlayer(socketId: string): roomTypes.Room[] {
     return this.roomExitService.removePlayer(socketId);
   }
 
-  // オーナーIDからルームを取得
+  // オーナーIDからルームを取得する
   public getRoomByOwnerId(ownerId: string): roomTypes.Room | undefined {
     return this.roomQueryService.getRoomByOwnerId(ownerId);
   }
diff --git a/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts b/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts
index 37d7416..c3e9cb8 100644
--- a/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts
+++ b/apps/server/src/domains/room/application/ports/roomUseCasePorts.ts
@@ -1,9 +1,15 @@
+/**
+ * roomUseCasePorts
+ * ルームユースケースが依存する操作ポートを定義する
+ */
 import type { roomTypes } from "@repo/shared";
 
+/** ルーム参加ユースケースが利用する参加操作ポート */
 export interface JoinRoomPort {
   addPlayerToRoom(roomId: string, socketId: string, playerName: string): roomTypes.Room;
 }
 
+/** ルーム切断ユースケースが利用する退出操作ポート */
 export interface DisconnectRoomPort {
   removePlayer(socketId: string): roomTypes.Room[];
 }
diff --git a/apps/server/src/domains/room/application/services/RoomExitService.ts b/apps/server/src/domains/room/application/services/RoomExitService.ts
index f7b8106..36696e3 100644
--- a/apps/server/src/domains/room/application/services/RoomExitService.ts
+++ b/apps/server/src/domains/room/application/services/RoomExitService.ts
@@ -1,6 +1,11 @@
+/**
+ * RoomExitService
+ * ルーム退出処理とオーナー移譲処理を担うサービス
+ */
 import type { roomTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
 
+/** 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 {
   constructor(private rooms: Map<string, roomTypes.Room>) {}
 
diff --git a/apps/server/src/domains/room/application/services/RoomJoinService.ts b/apps/server/src/domains/room/application/services/RoomJoinService.ts
index c9082d7..4af2108 100644
--- a/apps/server/src/domains/room/application/services/RoomJoinService.ts
+++ b/apps/server/src/domains/room/application/services/RoomJoinService.ts
@@ -1,7 +1,12 @@
+/**
+ * RoomJoinService
+ * ルーム作成とプレイヤー参加処理を担うサービス
+ */
 import { config, roomConsts } from "@repo/shared";
 import type { roomTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
 
+/** 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 */
 export class RoomJoinService {
   constructor(private rooms: Map<string, roomTypes.Room>) {}
 
diff --git a/apps/server/src/domains/room/application/services/RoomQueryService.ts b/apps/server/src/domains/room/application/services/RoomQueryService.ts
index 3ad5dc2..89abc7c 100644
--- a/apps/server/src/domains/room/application/services/RoomQueryService.ts
+++ b/apps/server/src/domains/room/application/services/RoomQueryService.ts
@@ -1,5 +1,10 @@
+/**
+ * RoomQueryService
+ * ルーム状態の参照系クエリを提供するサービス
+ */
 import type { roomTypes } from "@repo/shared";
 
+/** ルームの参照クエリを提供するサービス */
 export class RoomQueryService {
   constructor(private rooms: Map<string, roomTypes.Room>) {}
 
diff --git a/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts b/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
index c65239f..661618c 100644
--- a/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
+++ b/apps/server/src/domains/room/application/useCases/joinRoomUseCase.ts
@@ -1,3 +1,7 @@
+/**
+ * joinRoomUseCase
+ * ルーム参加要求を処理し，状態更新を配信するユースケース
+ */
 import type { roomTypes } from "@repo/shared";
 import type { JoinRoomPort } from "../ports/roomUseCasePorts";
 import { logEvent } from "@server/logging/logEvent";
@@ -9,6 +13,7 @@
   publishRoomUpdate: (roomId: roomTypes.Room["roomId"], room: roomTypes.Room) => void;
 };
 
+/** 参加イベントを受け取り，ルーム更新を配信する */
 export const joinRoomUseCase = ({
   roomManager,
   socketId,
diff --git a/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts b/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts
index 2e54090..1f3a4e1 100644
--- a/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts
+++ b/apps/server/src/domains/room/application/useCases/roomDisconnectUseCase.ts
@@ -1,3 +1,7 @@
+/**
+ * roomDisconnectUseCase
+ * 切断時のルーム退出処理と状態更新配信を行うユースケース
+ */
 import type { DisconnectRoomPort } from "../ports/roomUseCasePorts";
 import type { roomTypes } from "@repo/shared";
 import { logEvent } from "@server/logging/logEvent";
@@ -8,6 +12,7 @@
   publishRoomUpdate: (roomId: roomTypes.Room["roomId"], room: roomTypes.Room) => void;
 };
 
+/** 切断ソケットを各ルームから退出させ，更新ルームを配信する */
 export const roomDisconnectUseCase = ({
   roomManager,
   socketId,