diff --git a/apps/client/src/scenes/game/GameManager.ts b/apps/client/src/scenes/game/GameManager.ts
index 12d3d86..7e3b51a 100644
--- a/apps/client/src/scenes/game/GameManager.ts
+++ b/apps/client/src/scenes/game/GameManager.ts
@@ -221,6 +221,7 @@
       isInputEnabled: this.runtime.isInputEnabled(),
       teamPaintRates: this.runtime.getPaintRatesByTeam(),
       localBombHitCount: this.localBombHitCount,
+      localPlayerPosition: this.runtime.getLocalPlayerPosition(),
     };
   }
 
diff --git a/apps/client/src/scenes/game/GameScene.tsx b/apps/client/src/scenes/game/GameScene.tsx
index 0703325..ae6640e 100644
--- a/apps/client/src/scenes/game/GameScene.tsx
+++ b/apps/client/src/scenes/game/GameScene.tsx
@@ -20,6 +20,7 @@
     isInputEnabled,
     teamPaintRates,
     localBombHitCount,
+    localPlayerPosition,
     handleInput,
     handlePlaceBomb,
   } = useGameSceneController(myId);
@@ -31,6 +32,7 @@
       isInputEnabled={isInputEnabled}
       teamPaintRates={teamPaintRates}
       localBombHitCount={localBombHitCount}
+      localPlayerPosition={localPlayerPosition}
       pixiContainerRef={pixiContainerRef}
       onJoystickInput={handleInput}
       onPlaceBomb={handlePlaceBomb}
diff --git a/apps/client/src/scenes/game/GameView.tsx b/apps/client/src/scenes/game/GameView.tsx
index c78b209..dbd6967 100644
--- a/apps/client/src/scenes/game/GameView.tsx
+++ b/apps/client/src/scenes/game/GameView.tsx
@@ -8,6 +8,7 @@
   GAME_VIEW_BOMB_HIT_DEBUG_STYLE,
   GAME_VIEW_FEVER_TEXT_STYLE,
   GAME_VIEW_HURRICANE_WARNING_STYLE,
+  GAME_VIEW_TOP_RIGHT_OVERLAY_STYLE,
   GAME_VIEW_PAINT_RATE_ITEM_STYLE,
   GAME_VIEW_PAINT_RATE_PANEL_STYLE,
   GAME_VIEW_PAINT_RATE_SQUARE_STYLE,
@@ -18,6 +19,7 @@
 } from "./styles/GameView.styles";
 import { config } from "@client/config";
 import { buildRespawnHeartGauge } from "./input/presentation/GameUiPresenter";
+import { MiniMapPanel } from "./input/minimap/presentation/MiniMapPanel";
 
 /** 表示と入力に必要なプロパティ */
 type Props = {
@@ -26,6 +28,7 @@
   isInputEnabled: boolean;
   teamPaintRates: number[];
   localBombHitCount: number;
+  localPlayerPosition: { x: number; y: number } | null;
   pixiContainerRef: React.RefObject<HTMLDivElement>;
   onJoystickInput: (x: number, y: number) => void;
   onPlaceBomb: () => boolean;
@@ -100,6 +103,7 @@
   isInputEnabled,
   teamPaintRates,
   localBombHitCount,
+  localPlayerPosition,
   pixiContainerRef,
   onJoystickInput,
   onPlaceBomb,
@@ -115,10 +119,13 @@
       {/* タイマーUIの表示 */}
       <TimerOverlay timeLeft={timeLeft} />
       <div style={GAME_VIEW_BOMB_HIT_DEBUG_STYLE}>HP: {heartGauge}</div>
-      <TeamPaintRateOverlay
-        teamPaintRates={teamPaintRates}
-        remainingSeconds={remainingSeconds}
-      />
+      <div style={GAME_VIEW_TOP_RIGHT_OVERLAY_STYLE}>
+        <TeamPaintRateOverlay
+          teamPaintRates={teamPaintRates}
+          remainingSeconds={remainingSeconds}
+        />
+        <MiniMapPanel localPlayerPosition={localPlayerPosition} />
+      </div>
 
       {remainingSeconds === 60 && (
         <div style={GAME_VIEW_FEVER_TEXT_STYLE}>！Fever Tieme！</div>
diff --git a/apps/client/src/scenes/game/application/runtime/GameSceneRuntime.ts b/apps/client/src/scenes/game/application/runtime/GameSceneRuntime.ts
index 260d65c..c145d5b 100644
--- a/apps/client/src/scenes/game/application/runtime/GameSceneRuntime.ts
+++ b/apps/client/src/scenes/game/application/runtime/GameSceneRuntime.ts
@@ -193,6 +193,20 @@
     return this.gameMap.getPaintRatesByTeam();
   }
 
+  /** ローカルプレイヤーの現在座標を返す */
+  public getLocalPlayerPosition(): { x: number; y: number } | null {
+    const localPlayer = this.playerRepository.getById(this.myId);
+    if (!localPlayer) {
+      return null;
+    }
+
+    const position = localPlayer.getPosition();
+    return {
+      x: Math.round(position.x * 10) / 10,
+      y: Math.round(position.y * 10) / 10,
+    };
+  }
+
   /** 実行系サブシステムを破棄する */
   public destroy(): void {
     if (this.lifecycleState === "destroyed") {
diff --git a/apps/client/src/scenes/game/application/ui/GameUiStateSyncService.ts b/apps/client/src/scenes/game/application/ui/GameUiStateSyncService.ts
index 0152bb0..e131a4c 100644
--- a/apps/client/src/scenes/game/application/ui/GameUiStateSyncService.ts
+++ b/apps/client/src/scenes/game/application/ui/GameUiStateSyncService.ts
@@ -17,6 +17,22 @@
   isInputEnabled: boolean;
   teamPaintRates: number[];
   localBombHitCount: number;
+  localPlayerPosition: { x: number; y: number } | null;
+};
+
+const isSameLocalPlayerPosition = (
+  a: { x: number; y: number } | null,
+  b: { x: number; y: number } | null,
+): boolean => {
+  if (a === null && b === null) {
+    return true;
+  }
+
+  if (a === null || b === null) {
+    return false;
+  }
+
+  return a.x === b.x && a.y === b.y;
 };
 
 const isSamePaintRates = (a: number[], b: number[]): boolean => {
@@ -74,7 +90,11 @@
       this.lastState.startCountdownSec === snapshot.startCountdownSec &&
       this.lastState.isInputEnabled === snapshot.isInputEnabled &&
       this.lastState.localBombHitCount === snapshot.localBombHitCount &&
-      isSamePaintRates(this.lastState.teamPaintRates, snapshot.teamPaintRates)
+      isSamePaintRates(this.lastState.teamPaintRates, snapshot.teamPaintRates) &&
+      isSameLocalPlayerPosition(
+        this.lastState.localPlayerPosition,
+        snapshot.localPlayerPosition,
+      )
     ) {
       return;
     }
diff --git a/apps/client/src/scenes/game/hooks/useGameSceneController.ts b/apps/client/src/scenes/game/hooks/useGameSceneController.ts
index 3b1b718..55b3cb1 100644
--- a/apps/client/src/scenes/game/hooks/useGameSceneController.ts
+++ b/apps/client/src/scenes/game/hooks/useGameSceneController.ts
@@ -29,6 +29,10 @@
     DEFAULT_TEAM_PAINT_RATES,
   );
   const [localBombHitCount, setLocalBombHitCount] = useState(0);
+  const [localPlayerPosition, setLocalPlayerPosition] = useState<{
+    x: number;
+    y: number;
+  } | null>(null);
 
   useEffect(() => {
     if (!pixiContainerRef.current || !myId) return;
@@ -53,6 +57,7 @@
 
       setTeamPaintRates(state.teamPaintRates);
       setLocalBombHitCount(state.localBombHitCount);
+      setLocalPlayerPosition(state.localPlayerPosition);
     });
 
     return () => {
@@ -63,6 +68,7 @@
       setIsInputEnabled(false);
       setTeamPaintRates(DEFAULT_TEAM_PAINT_RATES);
       setLocalBombHitCount(0);
+      setLocalPlayerPosition(null);
     };
   }, [myId]);
 
@@ -81,6 +87,7 @@
     isInputEnabled,
     teamPaintRates,
     localBombHitCount,
+    localPlayerPosition,
     handleInput,
     handlePlaceBomb,
   };
diff --git a/apps/client/src/scenes/game/input/minimap/presentation/MiniMapPanel.styles.ts b/apps/client/src/scenes/game/input/minimap/presentation/MiniMapPanel.styles.ts
new file mode 100644
index 0000000..f73e59b
--- /dev/null
+++ b/apps/client/src/scenes/game/input/minimap/presentation/MiniMapPanel.styles.ts
@@ -0,0 +1,63 @@
+/**
+ * MiniMapPanel.styles
+ * ミニマップパネルの描画スタイルを集約する
+ * トグルボタンとマップ表示の見た目を定義する
+ */
+import type { CSSProperties } from "react";
+
+/** ミニマップコンテナのスタイル */
+export const MINIMAP_PANEL_ROOT_STYLE: CSSProperties = {
+  display: "flex",
+  flexDirection: "column",
+  alignItems: "flex-end",
+  gap: "8px",
+  pointerEvents: "auto",
+};
+
+/** ミニマップ開閉ボタンのスタイルを返す */
+export const buildMiniMapToggleButtonStyle = (
+  isOpen: boolean,
+): CSSProperties => ({
+  minWidth: "84px",
+  height: "32px",
+  padding: "0 10px",
+  borderRadius: "999px",
+  border: "1px solid rgba(255,255,255,0.55)",
+  background: isOpen ? "rgba(55, 18, 18, 0.82)" : "rgba(14, 14, 14, 0.82)",
+  color: "#ffffff",
+  fontFamily: "monospace",
+  fontWeight: 800,
+  fontSize: "12px",
+  cursor: "pointer",
+  textShadow: "1px 1px 2px rgba(0,0,0,0.65)",
+});
+
+/** ミニマップ表示領域のスタイル */
+export const MINIMAP_FRAME_STYLE: CSSProperties = {
+  position: "relative",
+  width: "128px",
+  height: "128px",
+  border: "2px solid rgba(255,255,255,0.65)",
+  borderRadius: "10px",
+  background:
+    "linear-gradient(160deg, rgba(34,34,34,0.92), rgba(12,12,12,0.92))",
+  boxShadow: "0 0 8px rgba(0,0,0,0.45)",
+  overflow: "hidden",
+};
+
+/** ミニマップ内の現在地ドットスタイルを返す */
+export const buildMiniMapDotStyle = (
+  leftPx: number,
+  topPx: number,
+): CSSProperties => ({
+  position: "absolute",
+  left: `${leftPx}px`,
+  top: `${topPx}px`,
+  width: "10px",
+  height: "10px",
+  borderRadius: "50%",
+  border: "2px solid rgba(0,0,0,0.7)",
+  background: "#ffffff",
+  boxShadow: "0 0 6px rgba(255,255,255,0.8)",
+  transform: "translate(-50%, -50%)",
+});
diff --git a/apps/client/src/scenes/game/input/minimap/presentation/MiniMapPanel.tsx b/apps/client/src/scenes/game/input/minimap/presentation/MiniMapPanel.tsx
new file mode 100644
index 0000000..feaec53
--- /dev/null
+++ b/apps/client/src/scenes/game/input/minimap/presentation/MiniMapPanel.tsx
@@ -0,0 +1,78 @@
+/**
+ * MiniMapPanel
+ * ミニマップの開閉操作と表示を担うプレゼンテーションコンポーネント
+ * 全体マップ枠とローカルプレイヤー現在地のみを描画する
+ */
+import { useMemo, useState } from "react";
+import { config } from "@client/config";
+import {
+  buildMiniMapDotStyle,
+  buildMiniMapToggleButtonStyle,
+  MINIMAP_FRAME_STYLE,
+  MINIMAP_PANEL_ROOT_STYLE,
+} from "./MiniMapPanel.styles";
+
+const MINIMAP_FRAME_SIZE_PX = 128;
+
+/** ミニマップの入力プロパティ */
+export type MiniMapPanelProps = {
+  localPlayerPosition: { x: number; y: number } | null;
+};
+
+const clamp = (value: number, min: number, max: number): number => {
+  return Math.max(min, Math.min(value, max));
+};
+
+/** 全体マップ上のローカル位置を示すミニマップを描画する */
+export const MiniMapPanel = ({ localPlayerPosition }: MiniMapPanelProps) => {
+  const [isOpen, setIsOpen] = useState(false);
+
+  const markerPosition = useMemo(() => {
+    if (!localPlayerPosition) {
+      return null;
+    }
+
+    const width = config.GAME_CONFIG.MAP_WIDTH_PX;
+    const height = config.GAME_CONFIG.MAP_HEIGHT_PX;
+    if (width <= 0 || height <= 0) {
+      return null;
+    }
+
+    const normalizedX = clamp(localPlayerPosition.x / width, 0, 1);
+    const normalizedY = clamp(localPlayerPosition.y / height, 0, 1);
+
+    return {
+      leftPx: normalizedX * MINIMAP_FRAME_SIZE_PX,
+      topPx: normalizedY * MINIMAP_FRAME_SIZE_PX,
+    };
+  }, [localPlayerPosition]);
+
+  const buttonStyle = buildMiniMapToggleButtonStyle(isOpen);
+
+  return (
+    <div style={MINIMAP_PANEL_ROOT_STYLE}>
+      <button
+        type="button"
+        style={buttonStyle}
+        onClick={() => {
+          setIsOpen((prev) => !prev);
+        }}
+      >
+        {isOpen ? "閉じる" : "ミニマップ"}
+      </button>
+
+      {isOpen && (
+        <div style={MINIMAP_FRAME_STYLE}>
+          {markerPosition && (
+            <div
+              style={buildMiniMapDotStyle(
+                markerPosition.leftPx,
+                markerPosition.topPx,
+              )}
+            />
+          )}
+        </div>
+      )}
+    </div>
+  );
+};
diff --git a/apps/client/src/scenes/game/styles/GameView.styles.ts b/apps/client/src/scenes/game/styles/GameView.styles.ts
index 5be6c99..f6d723d 100644
--- a/apps/client/src/scenes/game/styles/GameView.styles.ts
+++ b/apps/client/src/scenes/game/styles/GameView.styles.ts
@@ -32,12 +32,19 @@
   WebkitUserSelect: "none",
 };
 
-/** 右上のチーム塗り率パネルスタイル */
-export const GAME_VIEW_PAINT_RATE_PANEL_STYLE: CSSProperties = {
+/** 右上オーバーレイのコンテナスタイル */
+export const GAME_VIEW_TOP_RIGHT_OVERLAY_STYLE: CSSProperties = {
   position: "absolute",
   top: "20px",
   right: "16px",
   zIndex: 12,
+  display: "flex",
+  alignItems: "flex-start",
+  gap: "12px",
+};
+
+/** 右上のチーム塗り率パネルスタイル */
+export const GAME_VIEW_PAINT_RATE_PANEL_STYLE: CSSProperties = {
   color: "white",
   fontSize: "14px",
   fontWeight: 700,