Cognomen ตุ๊ (Tu 
, Obese 
, ตุ๊) , in all the world, is a widespread surname. The surname ตุ๊ is habitual in Marshall Islands, where it is a common surname, Myanmar, where it is quite a common surname, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in China, Myanmar, and Vietnam. Very seldom, ตุ๊ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tu | Myanmar, Taiwan, Vietnam, India, China |
| Obese | Canada, United States, Ghana, Ethiopia, China |