Family name Сибрук (Seabrook 
, Сибрук 
) , all around the world, is quite a common surname. The cognomen Сибрук is characteristic of Reunion, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and Australia. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Canada. Very seldom, Сибрук is the forename as well as the last name.