Cognomen סונדי (Sondi 
, Szondi 
, סונדי 
) , in all the world, is quite a common family name. The last name סונדי is characteristic of Hungary, where it is quite a common surname, Cameroon, where it is quite a rare surname, and Romania, where it is a rare surname. Measured by absolute frequency, it is commonest in India, Hungary, and Cameroon. Very seldom, סונדי is the forename as well as the last name.