diff --git a/Assets/_DDD/_Scripts/GameFramework/Localization/GoogleSheetData.cs b/Assets/_DDD/_Scripts/GameFramework/Localization/GoogleSheetData.cs
new file mode 100644
index 000000000..ba1008493
--- /dev/null
+++ b/Assets/_DDD/_Scripts/GameFramework/Localization/GoogleSheetData.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+
+namespace DDD
+{
+    [Serializable]
+    public class SheetTableData
+    {
+        public string Key;
+        public Dictionary<string, string> LocaleValues = new(); // ex: "en" → "Potion"
+    }
+
+    [Serializable]
+    public class SheetUploadPayload
+    {
+        public Dictionary<string, List<SheetTableData>> Tables = new(); // TableName → Entries
+    }
+
+    [Serializable]
+    public class SheetDownloadPayload
+    {
+        public Dictionary<string, List<Dictionary<string, string>>> Tables = new(); // TableName → Rows (Key, en, ko, ja ...)
+    }
+}
\ No newline at end of file
diff --git a/Assets/_DDD/_Scripts/GameFramework/Localization/GoogleSheetWebClient.cs b/Assets/_DDD/_Scripts/GameFramework/Localization/GoogleSheetWebClient.cs
new file mode 100644
index 000000000..b52744397
--- /dev/null
+++ b/Assets/_DDD/_Scripts/GameFramework/Localization/GoogleSheetWebClient.cs
@@ -0,0 +1,48 @@
+using UnityEngine;
+using UnityEngine.Networking;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DDD
+{
+    public static class GoogleSheetWebClient
+    {
+        public static async Task<string> Get(string url)
+        {
+            var req = UnityWebRequest.Get(url);
+            var op = req.SendWebRequest();
+
+            while (!op.isDone)
+                await Task.Yield();
+
+            if (req.result != UnityWebRequest.Result.Success)
+            {
+                Debug.LogError("GET Failed: " + req.error);
+                return null;
+            }
+
+            return req.downloadHandler.text;
+        }
+
+        public static async Task<string> Post(string url, string json)
+        {
+            var req = new UnityWebRequest(url, "POST");
+            byte[] bodyRaw = Encoding.UTF8.GetBytes(json);
+            req.uploadHandler = new UploadHandlerRaw(bodyRaw);
+            req.downloadHandler = new DownloadHandlerBuffer();
+            req.SetRequestHeader("Content-Type", "application/json");
+
+            var op = req.SendWebRequest();
+            while (!op.isDone)
+                await Task.Yield();
+
+            if (req.result != UnityWebRequest.Result.Success)
+            {
+                Debug.LogError("POST Failed: " + req.error);
+                return null;
+            }
+
+            return req.downloadHandler.text;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationExporter.cs b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationExporter.cs
new file mode 100644
index 000000000..ba5b0d6f0
--- /dev/null
+++ b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationExporter.cs
@@ -0,0 +1,66 @@
+#if UNITY_EDITOR
+using UnityEngine;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using UnityEditor.Localization;
+using UnityEngine.Localization.Settings;
+using UnityEngine.Localization.Tables;
+
+namespace DDD
+{
+    public static class LocalizationExporter
+    {
+        public static async void ExportAllToSheet(string webAppUrl)
+        {
+            var collections = LocalizationEditorSettings.GetStringTableCollections();
+            var exportPayload = new SheetUploadPayload();
+
+            List<string> localeOrder = GetOrderedLocaleCodes();
+
+            foreach (var collection in collections)
+            {
+                string tableName = collection.TableCollectionName;
+                var shared = collection.SharedData;
+                var entries = new List<SheetTableData>();
+
+                foreach (var sharedEntry in shared.Entries)
+                {
+                    var row = new SheetTableData { Key = sharedEntry.Key };
+                    foreach (var localeCode in localeOrder)
+                    {
+                        var table = collection.GetTable(localeCode) as StringTable;
+                        if (table != null)
+                        {
+                            string value = table.GetEntry(sharedEntry.Id)?.Value ?? "";
+                            row.LocaleValues[localeCode] = value;
+                        }
+                    }
+                    entries.Add(row);
+                }
+
+                exportPayload.Tables[tableName] = entries;
+            }
+
+            string json = JsonConvert.SerializeObject(exportPayload);
+            Debug.Log($"Localization Exporting...");
+
+            var response = await GoogleSheetWebClient.Post(webAppUrl, json);
+            Debug.Log($"<color=green>[Localization Export 완료]</color> 응답: {response}");
+        }
+
+        /// <summary>
+        /// Localization Settings에 등록된 Locale 순서대로 Locale 코드 리스트 반환
+        /// </summary>
+        public static List<string> GetOrderedLocaleCodes()
+        {
+            var locales = LocalizationSettings.AvailableLocales.Locales;
+            var result = new List<string>();
+            foreach (var locale in locales)
+            {
+                result.Add(locale.Identifier.Code); // 예: "ko", "en", "ja"
+            }
+            return result;
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationImporter.cs b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationImporter.cs
new file mode 100644
index 000000000..9d8a212da
--- /dev/null
+++ b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationImporter.cs
@@ -0,0 +1,56 @@
+#if UNITY_EDITOR
+using UnityEngine;
+using UnityEditor;
+using UnityEngine.Localization.Tables;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using UnityEditor.Localization;
+
+namespace DDD
+{
+    public static class LocalizationImporter
+    {
+        public static async void ImportAllFromSheet(string webAppUrl)
+        {
+            string json = await GoogleSheetWebClient.Get(webAppUrl);
+            if (string.IsNullOrEmpty(json)) return;
+
+            var payload = JsonConvert.DeserializeObject<SheetDownloadPayload>(json);
+            foreach (var kv in payload.Tables)
+            {
+                string tableName = kv.Key;
+                List<Dictionary<string, string>> rows = kv.Value;
+
+                var collection = LocalizationEditorSettings.GetStringTableCollection(tableName);
+                if (collection == null)
+                {
+                    Debug.LogWarning($"[Localization] Table not found: {tableName}");
+                    continue;
+                }
+
+                var shared = collection.SharedData;
+
+                foreach (var row in rows)
+                {
+                    if (!row.TryGetValue("Key", out var key)) continue;
+                    var sharedEntry = shared.GetEntry(key) ?? shared.AddKey(key);
+
+                    foreach (var localeCode in row.Keys)
+                    {
+                        if (localeCode == "Key") continue;
+                        var table = collection.GetTable(localeCode) as StringTable;
+                        if (table == null) continue;
+
+                        table.AddEntry(sharedEntry.Id, row[localeCode]);
+                        EditorUtility.SetDirty(table);
+                    }
+                }
+
+                AssetDatabase.SaveAssets();
+            }
+
+            Debug.Log("<color=green>[Localization Import]</color> 완료");
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationManager.cs b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationManager.cs
index 4decd28fb..eccd25c8d 100644
--- a/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationManager.cs
+++ b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationManager.cs
@@ -1,31 +1,56 @@
-#if UNITY_EDITOR
-using UnityEditor;
-using UnityEngine;
+using UnityEngine.Localization.Settings;
+using System.Linq;
 
 namespace DDD
 {
-    public class LocalizationManager : MonoBehaviour
+    public enum TableName
     {
-        [SerializeField]
-        private string _webUrl = "https://script.google.com/macros/s/AKfycbx6ZrQNJIot1A_uwjilgOxHEm7zPommHyi7nH-x1d8sNgMEUeoqHf8iwvEnA1AxKBU6/exec";
-        
-        // [MenuItem("Tools/Localization/Import All From Sheet")]
-        // public static void ImportAll()
-        // {
-        //     var url = GetManager()?.WebUrl;
-        //     if (string.IsNullOrEmpty(url)) return;
-        //
-        //     LocalizationImporter.ImportAll(url);
-        // }
-        //
-        // [MenuItem("Tools/Localization/Export All To Sheet")]
-        // public static void ExportAll()
-        // {
-        //     var url = GetManager()?.WebUrl;
-        //     if (string.IsNullOrEmpty(url)) return;
-        //
-        //     LocalizationExporter.ExportAll(url);
-        // }
+        None = 0,
+        Item_Name,
+        Item_Description,
     }
-}
-#endif
\ No newline at end of file
+
+    public static class LocalizationManager
+    {
+        /// <summary>
+        /// 현재 선택된 로케일 기준으로 로컬라이징 텍스트를 가져옵니다.
+        /// </summary>
+        public static string GetString(TableName table, string key)
+        {
+            if (table == TableName.None || string.IsNullOrEmpty(key))
+                return $"[Invalid:{table}/{key}]";
+
+            var locale = LocalizationSettings.SelectedLocale;
+            var tableName = table.ToString();
+
+            var stringTable = LocalizationSettings.StringDatabase.GetTable(tableName, locale);
+            if (stringTable == null)
+                return $"[Missing Table:{tableName}]";
+
+            var entry = stringTable.GetEntry(key);
+            if (entry == null)
+                return $"[Missing Key:{key}]";
+
+            return entry.GetLocalizedString();
+        }
+
+        /// <summary>
+        /// 현재 사용 중인 로케일 코드 반환 (예: "ko", "en", "ja")
+        /// </summary>
+        public static string GetCurrentLocaleCode()
+        {
+            return LocalizationSettings.SelectedLocale.Identifier.Code;
+        }
+
+        /// <summary>
+        /// 로케일 코드로 현재 언어를 설정합니다. (예: "ko", "en", "ja")
+        /// </summary>
+        public static void SetLocale(string code)
+        {
+            var locale = LocalizationSettings.AvailableLocales.Locales
+                .FirstOrDefault(l => l.Identifier.Code == code);
+            if (locale != null)
+                LocalizationSettings.SelectedLocale = locale;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationSyncTool.cs b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationSyncTool.cs
new file mode 100644
index 000000000..392f81970
--- /dev/null
+++ b/Assets/_DDD/_Scripts/GameFramework/Localization/LocalizationSyncTool.cs
@@ -0,0 +1,23 @@
+#if UNITY_EDITOR
+using UnityEditor;
+
+namespace DDD
+{
+    public static class LocalizationSyncTool
+    {
+        public static readonly string WebAppUrl = "https://script.google.com/macros/s/AKfycbwVQ7_x0Didf_13h3qPB9lSMobBR9xr6nLffj_n8znNvfs-pdNylNA7nWzd2R-_IHGf/exec";
+
+        [MenuItem("Tools/Localization/Google Sheet → Unity")]
+        public static void ImportAll()
+        {
+            LocalizationImporter.ImportAllFromSheet(WebAppUrl);
+        }
+
+        [MenuItem("Tools/Localization/Unity → Google Sheet")]
+        public static void ExportAll()
+        {
+            LocalizationExporter.ExportAllToSheet(WebAppUrl);
+        }
+    }
+}
+#endif
\ No newline at end of file