Cognomen ลืม (Forget 
, ลืม 
, Luem 
) , around the world, is a common last name. The family name ลืม is habitual in Mauritius, where it is quite a common surname, Canada, and France, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in France, Canada, and the United States. Very seldom, ลืม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Forget | Myanmar, Canada, France, United States, Zimbabwe |
| ลืม | Thailand |
| Luem | Myanmar, Canada, New Zealand, United States, Switzerland |