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Surname Bayani (Bayani , バヤニ, بياني ) , globally, is a common family name. The family name Bayani is characteristic of Philippines, where it is quite a common surname, Botswana, and Iran, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Philippines, Iran, and India. Likewise, Bayani is the forename as well as the last name.