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Family name Ordain (Ordain , Ordiner , บวชชี ) , throughout the world, is a very rare cognomen. The family name Ordain is characteristic of Costa Rica, where it is a rare surname, Thailand, where it is a very rare surname, and France, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Costa Rica, Thailand, and Nigeria. More prevalently, Ordain is the forename as well as the last name.