diff --git a/marimo/_server/ai/config.py b/marimo/_server/ai/config.py
index 7a42876ba79..e7a95579d1e 100644
--- a/marimo/_server/ai/config.py
+++ b/marimo/_server/ai/config.py
@@ -124,11 +124,16 @@ def _for_openai_like(
             ai_config, name, fallback_key=fallback_key, require_key=require_key
         )
 
+        # Use SSL_CERT_FILE environment variable as fallback for ca_bundle_path
+        ca_bundle_path = ai_config.get("ca_bundle_path") or cls.os_key(
+            "SSL_CERT_FILE"
+        )
+
         kwargs: dict[str, Any] = {
             "base_url": _get_base_url(ai_config) or fallback_base_url,
             "api_key": key,
             "ssl_verify": ai_config.get("ssl_verify", True),
-            "ca_bundle_path": ai_config.get("ca_bundle_path", None),
+            "ca_bundle_path": ca_bundle_path,
             "client_pem": ai_config.get("client_pem", None),
             "extra_headers": ai_config.get("extra_headers", None),
             "tools": _get_tools(config.get("mode", "manual")),
diff --git a/tests/_server/ai/test_ai_config.py b/tests/_server/ai/test_ai_config.py
index 7846b9106bf..1fc78fdd27f 100644
--- a/tests/_server/ai/test_ai_config.py
+++ b/tests/_server/ai/test_ai_config.py
@@ -974,6 +974,77 @@ def test_for_model_with_autocomplete_model(self) -> None:
         assert provider_config.tools is None
 
 
+class TestSSLConfiguration:
+    """Tests for SSL configuration across all OpenAI-like providers."""
+
+    @pytest.mark.parametrize(
+        ("provider_name", "provider_method", "api_key_config"),
+        [
+            ("openai", "for_openai", {"open_ai": {"api_key": "test-key"}}),
+            ("github", "for_github", {"github": {"api_key": "test-key"}}),
+            ("ollama", "for_ollama", {"ollama": {"api_key": "test-key"}}),
+        ],
+    )
+    def test_ssl_config_from_provider_config(
+        self,
+        provider_name: str,
+        provider_method: str,
+        api_key_config: AiConfig,
+    ) -> None:
+        """Test SSL configuration is read from provider config."""
+        # Get the provider key from api_key_config
+        provider_key = next(iter(api_key_config.keys()))
+
+        config: AiConfig = {
+            **api_key_config,
+        }
+        config[provider_key]["ssl_verify"] = False
+        config[provider_key]["ca_bundle_path"] = "/custom/path/to/ca.pem"
+        config[provider_key]["client_pem"] = "/custom/path/to/client.pem"
+        config[provider_key]["extra_headers"] = {"X-Custom": "header"}
+
+        method = getattr(AnyProviderConfig, provider_method)
+        provider_config = method(config)
+
+        assert provider_config.ssl_verify is False, (
+            f"{provider_name}: ssl_verify should be False"
+        )
+        assert provider_config.ca_bundle_path == "/custom/path/to/ca.pem", (
+            f"{provider_name}: ca_bundle_path should match"
+        )
+        assert provider_config.client_pem == "/custom/path/to/client.pem", (
+            f"{provider_name}: client_pem should match"
+        )
+        assert provider_config.extra_headers == {"X-Custom": "header"}, (
+            f"{provider_name}: extra_headers should match"
+        )
+
+    @pytest.mark.parametrize(
+        ("provider_name", "provider_method", "api_key_config"),
+        [
+            ("openai", "for_openai", {"open_ai": {"api_key": "test-key"}}),
+            ("github", "for_github", {"github": {"api_key": "test-key"}}),
+            ("ollama", "for_ollama", {"ollama": {"api_key": "test-key"}}),
+        ],
+    )
+    @patch.dict(os.environ, {"SSL_CERT_FILE": "/env/path/to/ca.pem"})
+    def test_ssl_cert_file_fallback(
+        self,
+        provider_name: str,
+        provider_method: str,
+        api_key_config: AiConfig,
+    ) -> None:
+        """Test SSL_CERT_FILE environment variable is used as fallback."""
+        config: AiConfig = {**api_key_config}
+
+        method = getattr(AnyProviderConfig, provider_method)
+        provider_config = method(config)
+
+        assert provider_config.ca_bundle_path == "/env/path/to/ca.pem", (
+            f"{provider_name}: should use SSL_CERT_FILE env var as fallback"
+        )
+
+
 class TestEdgeCases:
     """Tests for edge cases and error conditions."""