diff --git a/docs/integrations/supabase.mdx b/docs/integrations/supabase.mdx
index cbaa48920f..b98c9cb7d1 100644
--- a/docs/integrations/supabase.mdx
+++ b/docs/integrations/supabase.mdx
@@ -17,7 +17,7 @@ This guide shows you how to secure your FastMCP server using **Supabase Auth**.
 ### Prerequisites
 
 Before you begin, you will need:
-1. A **[Supabase Account](https://supabase.com/)** with a project
+1. A **[Supabase Account](https://supabase.com/)** with a project or a self-hosted **Supabase Auth** instance
 2. Your FastMCP server's URL (can be localhost for development, e.g., `http://localhost:8000`)
 
 ### Step 1: Get Supabase Project URL
@@ -37,7 +37,8 @@ from fastmcp.server.auth.providers.supabase import SupabaseProvider
 # Configure Supabase Auth
 auth = SupabaseProvider(
     project_url="https://abc123.supabase.co",
-    base_url="http://localhost:8000"
+    base_url="http://localhost:8000",
+    auth_route="/my/auth/route" # if self-hosting and using custom routes
 )
 
 mcp = FastMCP("Supabase Protected Server", auth=auth)
@@ -117,6 +118,10 @@ Your Supabase project URL (e.g., `https://abc123.supabase.co`)
 Public URL of your FastMCP server (e.g., `https://your-server.com` or `http://localhost:8000` for development)
 </ParamField>
 
+<ParamField path="FASTMCP_SERVER_AUTH_SUPABASE_AUTH_ROUTE" default="/auth/v1">
+Your Supabase auth route (e.g., `/auth/v1`)
+</ParamField>
+
 <ParamField path="FASTMCP_SERVER_AUTH_SUPABASE_REQUIRED_SCOPES" default="[]">
 Comma-, space-, or JSON-separated list of required OAuth scopes (e.g., `openid email` or `["openid", "email"]`)
 </ParamField>
diff --git a/src/fastmcp/server/auth/providers/supabase.py b/src/fastmcp/server/auth/providers/supabase.py
index 418831d484..50bb3be08c 100644
--- a/src/fastmcp/server/auth/providers/supabase.py
+++ b/src/fastmcp/server/auth/providers/supabase.py
@@ -34,6 +34,7 @@ class SupabaseProviderSettings(BaseSettings):
 
     project_url: AnyHttpUrl
     base_url: AnyHttpUrl
+    auth_route: str = "/auth/v1"
     algorithm: Literal["HS256", "RS256", "ES256"] = "ES256"
     required_scopes: list[str] | None = None
 
@@ -59,8 +60,8 @@ class SupabaseProvider(RemoteAuthProvider):
        - Asymmetric keys (RS256/ES256) are recommended for production
 
     2. JWT Verification:
-       - FastMCP verifies JWTs using the JWKS endpoint at {project_url}/auth/v1/.well-known/jwks.json
-       - JWTs are issued by {project_url}/auth/v1
+       - FastMCP verifies JWTs using the JWKS endpoint at {project_url}{auth_route}/.well-known/jwks.json
+       - JWTs are issued by {project_url}{auth_route}
        - Tokens are cached for up to 10 minutes by Supabase's edge servers
        - Algorithm must match your Supabase Auth configuration
 
@@ -93,6 +94,7 @@ def __init__(
         *,
         project_url: AnyHttpUrl | str | NotSetT = NotSet,
         base_url: AnyHttpUrl | str | NotSetT = NotSet,
+        auth_route: str | NotSetT = NotSet,
         algorithm: Literal["HS256", "RS256", "ES256"] | NotSetT = NotSet,
         required_scopes: list[str] | NotSetT | None = NotSet,
         token_verifier: TokenVerifier | None = None,
@@ -102,6 +104,7 @@ def __init__(
         Args:
             project_url: Your Supabase project URL (e.g., "https://abc123.supabase.co")
             base_url: Public URL of this FastMCP server
+            auth_route: Supabase Auth route. Defaults to "/auth/v1".
             algorithm: JWT signing algorithm (HS256, RS256, or ES256). Must match your
                 Supabase Auth configuration. Defaults to ES256.
             required_scopes: Optional list of scopes to require for all requests.
@@ -115,6 +118,7 @@ def __init__(
                 for k, v in {
                     "project_url": project_url,
                     "base_url": base_url,
+                    "auth_route": auth_route,
                     "algorithm": algorithm,
                     "required_scopes": required_scopes,
                 }.items()
@@ -124,12 +128,13 @@ def __init__(
 
         self.project_url = str(settings.project_url).rstrip("/")
         self.base_url = AnyHttpUrl(str(settings.base_url).rstrip("/"))
+        self.auth_route = settings.auth_route.strip("/")
 
         # Create default JWT verifier if none provided
         if token_verifier is None:
             token_verifier = JWTVerifier(
-                jwks_uri=f"{self.project_url}/auth/v1/.well-known/jwks.json",
-                issuer=f"{self.project_url}/auth/v1",
+                jwks_uri=f"{self.project_url}/{self.auth_route}/.well-known/jwks.json",
+                issuer=f"{self.project_url}/{self.auth_route}",
                 algorithm=settings.algorithm,
                 required_scopes=settings.required_scopes,
             )
@@ -137,7 +142,7 @@ def __init__(
         # Initialize RemoteAuthProvider with Supabase as the authorization server
         super().__init__(
             token_verifier=token_verifier,
-            authorization_servers=[AnyHttpUrl(f"{self.project_url}/auth/v1")],
+            authorization_servers=[AnyHttpUrl(f"{self.project_url}/{self.auth_route}")],
             base_url=self.base_url,
         )
 
@@ -162,7 +167,7 @@ async def oauth_authorization_server_metadata(request):
             try:
                 async with httpx.AsyncClient() as client:
                     response = await client.get(
-                        f"{self.project_url}/auth/v1/.well-known/oauth-authorization-server"
+                        f"{self.project_url}/{self.auth_route}/.well-known/oauth-authorization-server"
                     )
                     response.raise_for_status()
                     metadata = response.json()
diff --git a/tests/server/auth/providers/test_supabase.py b/tests/server/auth/providers/test_supabase.py
index 7cdc081309..5944fcfbb4 100644
--- a/tests/server/auth/providers/test_supabase.py
+++ b/tests/server/auth/providers/test_supabase.py
@@ -40,12 +40,14 @@ def test_init_with_env_vars(self, scopes_env):
             {
                 "FASTMCP_SERVER_AUTH_SUPABASE_PROJECT_URL": "https://env123.supabase.co",
                 "FASTMCP_SERVER_AUTH_SUPABASE_BASE_URL": "https://envserver.com",
+                "FASTMCP_SERVER_AUTH_SUPABASE_AUTH_ROUTE": "/custom/auth/route",
             },
         ):
             provider = SupabaseProvider()
 
             assert provider.project_url == "https://env123.supabase.co"
             assert str(provider.base_url) == "https://envserver.com/"
+            assert provider.auth_route == "custom/auth/route"
 
     def test_environment_variable_loading(self):
         """Test that environment variables are loaded correctly."""
@@ -150,6 +152,28 @@ def test_algorithm_from_env_var(self):
 
             assert provider.token_verifier.algorithm == "RS256"  # type: ignore[attr-defined]
 
+    def test_custom_auth_route(self):
+        provider = SupabaseProvider(
+            project_url="https://abc123.supabase.co",
+            base_url="https://myserver.com",
+            auth_route="/custom/auth/route",
+        )
+
+        assert provider.auth_route == "custom/auth/route"
+        assert (
+            provider.token_verifier.jwks_uri
+            == "https://abc123.supabase.co/custom/auth/route/.well-known/jwks.json"
+        )  # type: ignore[attr-defined]
+
+    def test_custom_auth_route_trailing_slash(self):
+        provider = SupabaseProvider(
+            project_url="https://abc123.supabase.co",
+            base_url="https://myserver.com",
+            auth_route="/custom/auth/route/",
+        )
+
+        assert provider.auth_route == "custom/auth/route"
+
 
 def run_mcp_server(host: str, port: int) -> None:
     mcp = FastMCP(