Cognomen Цоньо (Цоньо 
, Tsonyo 
) , all around the world, is a rare family name. The cognomen Цоньо is habitual in Eastern Europe, particularly Bulgaria, where it is quite a rare surname, Ukraine, where it is a very rare surname, and Russia, where it is an extremely rare surname. Likewise, Цоньо is the forename as well as the last name.