Family name シーマン (Seeman 
, Seaman 
, シーマン) , in all the world, is a common last name. The surname シーマン is habitual in Dominica, where it is a common surname, Estonia, where it is quite a common surname, and the United Kingdom, where it is quite a rare surname. In absolute terms, the name is most common in the United States, the United Kingdom, and Canada. Much less frequently, シーマン is the forename as well as the last name.