Surname Sincha (Sincha 
, ชินชา 
, Синча 
) , throughout the world, is a rare family name. The family name Sincha is characteristic of Ukraine, where it is a rare surname, Kyrgyzstan, and Kazakhstan. Measured by absolute frequency, it is the most numerous in Ukraine, Russia, and Kazakhstan. Much less frequently, Sincha is the forename as well as the last name.