Cognomen סיסלי (Cicely 
, Sisley 
, סיסלי 
) , across the world, is quite a rare last name. The family name סיסלי is habitual in Australia, where it is a rare surname, New Zealand, and Peru. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Australia. More prevalently, סיסלי is the forename as well as the last name.