Cognomen Lambagan (Lambagan 
) , all over the world, is a very rare surname. The surname Lambagan is habitual in Philippines, where it is a very rare surname, Malaysia, and the United States, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Philippines, Malaysia, and India. Much less frequently, Lambagan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lambagan | United States, India, Malaysia, Philippines |