O or Oh (majuscule: ÃÂ, minuscule: à, ) is the 38th letter of the reformed Armenian alphabet and the 37th letter of the classical Armenian alphabet. This letter was first noticed in a text from the year 1046 at the word ÃÂáÃÂáãáöàà(p'ap'aganok', longing).
Unlike many Armenian letters, O has no numeric value. It represents the open-mid back rounded vowel /ÃÂ/ in both Eastern and Western Armenian.