Cognomen ธงจักร (ธงจักร 
) , across the world, is an extremely rare family name. The family name ธงจักร is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, ธงจักร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ธงจักร | Thailand |