Surname Сулливан (Sullivan 
, Sullyvan 
, Сулливан 
) , in all the world, is a widespread cognomen. The cognomen Сулливан is habitual in Malta, where it is a common surname, Ireland, and Seychelles, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Australia. Much less frequently, Сулливан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sullivan | Australia, Canada, Ireland, United Kingdom, United States |
| Sullyvan | Canada, Reunion, France, Brazil, United States |
| Сулливан | Russia |