Last name Sadachi (佐立 
, Sadachi 
, Садати 
) , all around the world, is a very rare cognomen. The cognomen Sadachi is characteristic of Georgia, where it is a very rare surname, China, where it is an extremely rare surname, and Russia. Measured by absolute frequency, it most frequently occurs in China, India, and Russia. More prevalently, Sadachi is the forename as well as the last name.