Last name Lephan (Lephan 
) , around the globe, is a very rare family name. The surname Lephan is characteristic of Australia, where it is a very rare surname, Vietnam, and Canada. In absolute terms, it is the most numerous in Vietnam, the United States, and Australia. Much less frequently, Lephan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lephan | Australia, Canada, Vietnam, Italy, United States |