Family name Sibas (Sibas 
) , throughout the world, is a rare cognomen. The surname Sibas is habitual in Costa Rica, where it is a rare surname, the Democratic Republic of the Congo, and Philippines, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in the Democratic Republic of the Congo, Indonesia, and Philippines. Likewise, Sibas is the forename as well as the last name.