Across the world, לן (Lan 
, Len , Lehn 
) is a common unisex forename. The first name לן is habitual in Macao, where it is a common principally girly, but very infrequently male name, Hong Kong, where it is quite a common principally feminine, but very seldom boy's name, and Israel (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in the United States, Vietnam, and Canada. More prevalently, לן is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Lan, Len | China, Indonesia, Vietnam, Malaysia, Myanmar |
| Lehn | Germany, Vietnam, Malaysia, United States, France |
| לן | Israel |
לן is also a name for the fictitious and mythical characters: Len Kagamine , the Embodiment of a voicebank for the Vocaloid software by Yamaha; Lan Mandragoran , the fictional character from The Wheel of Time; Lan Fan , the fictional character from Fullmetal Alchemist, Fullmetal Alchemist: Brotherhood; Len Reynolds , the fictional character from Emmerdale and Len , the character from 2004 film 'Stuck in the Suburbs', among other works.