Throughout the world, Lengai (Lengai 
) is a rare boy's forename. The given name Lengai is habitual in Tanzania, where it is quite a rare boy's name, and India, where it is an extremely rare mostly boy's, but uncommonly feminine name. Likewise, Lengai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Lengai | Tanzania, Malaysia, India, Thailand, South Africa |