Surname Thongsuk (ทองสุข 
, ทองสุก , Thongsuk 
) , all over the world, is a common family name. The family name Thongsuk is characteristic of South-eastern Asia, particularly Thailand, where it is quite a common surname. Likewise, Thongsuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ทองสุข, ทองศุกร์, ทองสุก | Thailand |
| Thongsuk | Germany, Thailand, France, United States, New Zealand |
| thongsuk samdaengpan Thai Buddhist monk, TH (b. 1900) |
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| somsak thongsuk Thai sprinter, TH (b. 1939) |
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| wanpen thongsuk researcher (ORCID 0000-0002-2639-594X) |
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| bunjong thongsuk (b. 1983) |
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| sureerat thongsuk (b. 1986) |
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