Last name سيلى (Cilli 
, Celli , Seeley 
) , all over the world, is a common family name. The family name سيلى is characteristic of San Marino, where it is a common surname, British Virgin Islands, where it is quite a common surname, and Italy. Not in comparison with a country's population, the name is most common in the United States, Italy, and the United Kingdom. Much less frequently, سيلى is the forename as well as the last name.