diff --git a/GlobalMethods.h b/GlobalMethods.h
index 5af4baf..8ac9702 100644
--- a/GlobalMethods.h
+++ b/GlobalMethods.h
@@ -51,6 +51,24 @@ namespace LuaGlobalFunctions
         return 1;
     }
 
+    /**
+     * Returns emulator .conf RealmID
+     *
+     * - for MaNGOS returns the realmID as it is stored in the core.
+     * - for TrinityCore returns the realmID as it is in the conf file.
+     * @return uint32 realm ID
+     */
+
+    int GetRealmID(lua_State* L)
+    {
+#ifdef MANGOS
+        Eluna::Push(L, eWorld->GetRealmID());
+#else
+        Eluna::Push(L, sConfigMgr->GetIntDefault("RealmID", 1));
+#endif
+        return 1;
+    }
+
     /**
      * Returns emulator version
      *
diff --git a/LuaFunctions.cpp b/LuaFunctions.cpp
index db06749..ed640f8 100644
--- a/LuaFunctions.cpp
+++ b/LuaFunctions.cpp
@@ -77,6 +77,7 @@ luaL_Reg GlobalMethods[] =
     // Getters
     { "GetLuaEngine", &LuaGlobalFunctions::GetLuaEngine },
     { "GetCoreName", &LuaGlobalFunctions::GetCoreName },
+    { "GetRealmID", &LuaGlobalFunctions::GetRealmID },
     { "GetCoreVersion", &LuaGlobalFunctions::GetCoreVersion },
     { "GetCoreExpansion", &LuaGlobalFunctions::GetCoreExpansion },
     { "GetQuest", &LuaGlobalFunctions::GetQuest },