O, Capiz, also known as the Capiz Hymn, is the official provincial anthem of the province of Capiz in the Philippines. The hymn, which bested 24 other entries in a province-sponsored competition, was written by Charmaine O. Guartero, a high school music teacher at Filamer Christian University.The hymn was adopted on June 23, 2006 by an ordinance of the Sangguniang Panlalawigan of Capiz and performed for the first time at the charter aniniversary of the province.