O hook

O-hook (Ҩ ҩ; italics: Ҩ ҩ) is a letter of the Cyrillic script. In the Unicode text-encoding standard, this letter is called "Abkhasian Ha". Its form bears some similarities to the Greek letter Theta (Θ θ/ϑ). In English, O-hook is commonly romanized using the Latin letter O with dot below (Ọ ọ) but its ISO 9 transliteration is the Latin letter O with grave accent (Ò ò).

O-hook is used in the alphabet of the Abkhaz language where it represents the labial-palatal approximant /ɥ/, the sound of ⟨u⟩ in French "huit". It is placed between O and Π in the alphabet.