diff --git a/tests/e2e-auth-tests/cypress/e2e/apis/NonOrgMemberCannotDeleteApiServer.cy.ts b/tests/e2e-auth-tests/cypress/e2e/apis/NonOrgMemberCannotDeleteApiServer.cy.ts
new file mode 100644
index 00000000..d8133d31
--- /dev/null
+++ b/tests/e2e-auth-tests/cypress/e2e/apis/NonOrgMemberCannotDeleteApiServer.cy.ts
@@ -0,0 +1,89 @@
+// Verifies that DELETE /api/apis/:api_server_id returns 403 when the
+// authenticated caller is neither a global admin nor a member of the API
+// server's owner organization. This guards the authorization branch in
+// auth-server/src/app/api/apis/[api_server_id]/DELETE_api_server_handler.ts
+// that returns "Only organization owners or global admins can delete API
+// servers" (the isUserInOrganizationWithRole(..., "owner") check).
+//
+// The unauthenticated (401) case is covered by
+// misc/UnauthenticatedApiRequests.cy.ts, and the hardcoded-api-server
+// protection is covered by
+// resource_management/HardcodedResourceDeletionProtection.cy.ts. The
+// symmetric coverage already exists for apps in
+// apps/NonOrgMemberCannotDeleteApp.cy.ts, but the API-server side of this
+// authorization gate previously had no E2E coverage.
+
+interface ApiServerMutationResponseBody {
+  success: boolean;
+  message?: string;
+}
+
+describe("DELETE /api/apis/:api_server_id for non-org-member, non-admin user", () => {
+  it("returns 403 when the caller is not a member of the API server's owner organization", () => {
+    cy.create_and_login_as_superuser_via_request().then(
+      (adminLoggedIn: boolean) => {
+        expect(adminLoggedIn, "superuser login should succeed").to.be.true;
+
+        cy.generate_random_code(12).then((randomCode: string) => {
+          const lowerCode = randomCode.toLowerCase();
+          const organization_id = `api-del-auth-${lowerCode}`;
+          const name = `API Delete Auth Org ${randomCode}`;
+
+          cy.create_organization_via_request({ organization_id, name }).then(
+            () => {
+              const api_server_name = `API Delete Auth ${randomCode}`;
+              const api_server_description = `API server for delete-authorization E2E test ${randomCode}`;
+
+              cy.create_api_server({
+                api_server_name,
+                api_server_description,
+                organization_id,
+              }).then((createResult) => {
+                if (!createResult.success || !createResult.api_server_id) {
+                  throw new Error(
+                    `Failed to create test API server for org '${organization_id}'`,
+                  );
+                }
+                const api_server_id: string = createResult.api_server_id;
+
+                cy.logout().then(() => {
+                  cy.generate_random_test_user_credentials().then(
+                    (credentials) => {
+                      cy.create_and_login_as_regular_user_via_request(
+                        credentials,
+                      ).then((regularLoggedIn: boolean) => {
+                        expect(
+                          regularLoggedIn,
+                          "regular user login should succeed",
+                        ).to.be.true;
+
+                        cy.request<ApiServerMutationResponseBody>({
+                          method: "DELETE",
+                          url: `/api/apis/${api_server_id}`,
+                          failOnStatusCode: false,
+                        }).then((response) => {
+                          expect(
+                            response.status,
+                            "non-org-member DELETE should return 403",
+                          ).to.equal(403);
+                          expect(response.body).to.have.property(
+                            "success",
+                            false,
+                          );
+                          expect(
+                            String(response.body.message ?? "").toLowerCase(),
+                            "message should explain owner/admin requirement",
+                          ).to.include("owner");
+                        });
+                      });
+                    },
+                  );
+                });
+              });
+            },
+          );
+        });
+      },
+    );
+  });
+});
diff --git a/tests/e2e-auth-tests/package.json b/tests/e2e-auth-tests/package.json
index 5a74db32..27a83717 100644
--- a/tests/e2e-auth-tests/package.json
+++ b/tests/e2e-auth-tests/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@schemavaults/e2e-auth-tests",
-  "version": "0.4.5",
+  "version": "0.4.6",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/schemavaults/auth.git",