Family name Силс (Seals 
, Seales 
, Силс 
) , all over the world, is a common surname. The surname Силс is habitual in Latin America and the Caribbean, particularly Saint Vincent and the Grenadines, where it is quite a common surname, Grenada, and Trinidad and Tobago (explore the name in all countries). Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Canada.