Last name ทะวัน (Pan 
, ทะวัน 
, Thavanh 
) , all over the world, is a prevalent cognomen. The surname ทะวัน is characteristic of Mongolia, where it is a common surname, British Virgin Islands, and Cayman Islands (explore the name in all countries). In absolute terms, it is commonest in China, India, and Myanmar. Very seldom, ทะวัน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pan | Myanmar, Taiwan, India, Indonesia, China |
| ทะวัน | Thailand |
| Thavanh | Laos, United States |