In all the world, ทวินัน (ทวินัน 
) is a very rare mostly feminine, but uncommonly boy's forename. The first name ทวินัน is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare mostly girly, but infrequently male name. Very seldom, ทวินัน is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| ทวินัน | Thailand |