diff --git a/Google.Api.Generator.Rest.Tests/NamingTest.cs b/Google.Api.Generator.Rest.Tests/NamingTest.cs
new file mode 100644
index 00000000..9d825a7f
--- /dev/null
+++ b/Google.Api.Generator.Rest.Tests/NamingTest.cs
@@ -0,0 +1,35 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using Google.Api.Generator.Rest.Models;
+using Google.Api.Generator.Utils.Roslyn;
+using Xunit;
+
+namespace Google.Api.Generator.Rest.Tests
+{
+    public class NamingTest
+    {
+        [Fact]
+        public void GoogleKeywordIsEscaped()
+        {
+            var name = "Google";
+            var escapedName = Naming.ToMemberName(name);
+
+            Assert.True(Keywords.IsReservedName(name));
+            Assert.NotEqual(escapedName, name, StringComparer.OrdinalIgnoreCase);
+            Assert.False(Keywords.IsReservedName(escapedName));
+        }
+    }
+}
diff --git a/Google.Api.Generator.Rest/Models/Naming.cs b/Google.Api.Generator.Rest/Models/Naming.cs
index dc98370a..7f08a40a 100644
--- a/Google.Api.Generator.Rest/Models/Naming.cs
+++ b/Google.Api.Generator.Rest/Models/Naming.cs
@@ -37,7 +37,7 @@ internal static string ToMemberName(this string name, bool addUnderscoresToEscap
 
             // We don't really need to escape keywords given that we've upper-cased it,
             // but this is what the Python code does.
-            if (addUnderscoresToEscape && Keywords.IsKeyword(upper.ToLowerInvariant()))
+            if (addUnderscoresToEscape && (Keywords.IsKeyword(upper.ToLowerInvariant()) || Keywords.IsReservedName(upper)))
             {
                 upper += "__";
             }
diff --git a/Google.Api.Generator.Utils/Roslyn/Keywords.cs b/Google.Api.Generator.Utils/Roslyn/Keywords.cs
index b93d6aa2..94fc4515 100644
--- a/Google.Api.Generator.Utils/Roslyn/Keywords.cs
+++ b/Google.Api.Generator.Utils/Roslyn/Keywords.cs
@@ -100,8 +100,14 @@ public static class Keywords
             "while"
             );
 
+        private static readonly IImmutableSet<string> s_reservedName = ImmutableHashSet.Create(
+            "Google" // reserved for the root namespace
+            );
+
         public static string PrependAtIfKeyword(string word) => IsKeyword(word) ? $"@{word}" : word;
 
         public static bool IsKeyword(string word) => s_keywords.Contains(word);
+
+        public static bool IsReservedName(string word) => s_reservedName.Contains(word);
     }
 }