Every article that I can find on web suggests the keystroke Option + z to insert that Ω symbol on a Mac. However, on my Mac, when I press that combination, I get the ˀ character. I followed the instructions in this article.

  • 2
    What is your configured keyboard layout?
    – Nimesh Neema
    Mar 27, 2018 at 14:46

1 Answer 1


After changing my Input Source to U.S. (via System Preferences -> Keyboard -> Input Sources), the keystroke works as expected. Now pressing Option + z inserts the Ω character.


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