Cognomen 澤民 (Zemin 
, 澤民 ) , in the entire world, is a rare family name. The family name 澤民 is habitual in Cayman Islands, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Czechia. Measured by absolute frequency, it is the most numerous in China, Ethiopia, and Italy. More prevalently, 澤民 is the forename as well as the last name.