Family name 拉凯 (Lacaille 
, 拉凯) , globally, is quite a rare cognomen. The cognomen 拉凯 is characteristic of Reunion, where it is quite a common surname, France, where it is quite a rare surname, and Trinidad and Tobago. In absolute terms, it most frequently occurs in France, Canada, and the United States. Much less frequently, 拉凯 is the forename as well as the last name.