diff --git a/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs b/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs
index 78c2169536a01e..4d1b5cc1d63eb1 100644
--- a/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs
+++ b/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs
@@ -1792,6 +1792,7 @@ public void Start_RedirectStandardOutput_StartAgain_DoesntThrow()
         }
 
         [Fact]
+        [SkipOnPlatform(TestPlatforms.iOS | TestPlatforms.tvOS | TestPlatforms.MacCatalyst, "Process.Start() is not supported on iOS, tvOS, and MacCatalyst.")]
         public void Start_Disposed_ThrowsObjectDisposedException()
         {
             var process = new Process();