Family name Leidulf (Leidulf 
) , all around the world, is an extremely rare cognomen. The surname Leidulf is habitual in Norway, where it is a rare surname, and Spain, where it is an extremely rare surname. More prevalently, Leidulf is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leidulf | United States, Norway, Spain |