Last name ถวาย (Offer 
, ถวาย 
, Thawai 
) , all over the world, is quite a rare cognomen. The surname ถวาย is habitual in Hong Kong, where it is quite a rare surname, the United Kingdom, and Germany. Not in comparison with a country's population, it is the most numerous in Germany, the United Kingdom, and Thailand. Much less frequently, ถวาย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Offer | Myanmar, Bangladesh, Germany, United Kingdom, United States |
| ถวาย | Thailand |
| Thawai | Myanmar, Thailand, India, United States |