Cognomen Cestmir (Čestmír 
, Cestmir 
) , all over the world, is a rare last name. The surname Cestmir is characteristic of Czechia, where it is a rare surname, Ethiopia, where it is a very rare surname, and Spain, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Ethiopia, Czechia, and India. More frequently, Cestmir is the forename as well as the last name.