ⓘ Ɵ

                                     

ⓘ Ɵ

Barred o is a letter in several Latin-script alphabets.

Historic examples include the Azerbaijani alphabet used between 1922 and 1933 and its successor, the Uniform Turkic Alphabet including its versions like Jaꞑalif and the Azerbaijani alphabet used between 1933 and 1939, in which it represented the open-mid front rounded vowel represents the close-mid central rounded vowel.

The letter is not to be confused with the slashed zero, slashed O o, the similar Latin letter Ꝋ ꝋ, the Cyrillic letter fita Ѳ ѳ, or the Greek theta Θ θ, despite their similar shapes.