Cognomen Lausan (Lausan 
) , across the world, is a rare family name. The surname Lausan is characteristic of Philippines, where it is a rare surname, Indonesia, where it is a very rare surname, and France. Not in comparison with a country's population, it most frequently occurs in Philippines, Indonesia, and India. Much less frequently, Lausan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lausan | Philippines, France, Spain, India, Indonesia |