Family name Йоска (Joska 
, Йоска 
) , worldwide, is a rare cognomen. The surname Йоска is characteristic of Czechia, where it is quite a rare surname, North Macedonia, and Finland, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Czechia, Malaysia, and Brazil. Also, Йоска is the forename as well as the last name.