Last name Симидзу (志水 
, Hian 
, Shimizu 
) , in all the world, is a common surname. The cognomen Симидзу is habitual in Guam, where it is quite a common surname, Malaysia, and Singapore, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Malaysia, Japan, and Brazil. Very seldom, Симидзу is the forename as well as the last name.