Throughout the world, อุปถัมภ์ (อุปถัมภ์ 
, Fost 
, Upatham 
) is a rare largely boy's, but uncommonly girly forename. The given name อุปถัมภ์ is characteristic of Thailand, where it is a rare mostly male, but infrequently feminine name, and the Democratic Republic of the Congo, where it is a rare boy's name. More frequently, อุปถัมภ์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| อุปถัมภ์ | Thailand |
| Fost | Germany, United Kingdom, United States, Canada, Democratic Republic of the Congo |
| Upatham | Singapore, United States, Thailand, Australia |
| Uppatham | United States, Thailand |
Apatorn, Aupathe, Aupathon, Auppatai, Auppathamp, Auppathon, Aupphatam, Aupphatana, Aupphatark, Auprakhot, Auptham, Foster, Fosterroberts, Fostier, Impatra, Opatham, Opatpunya, Opatragoon, Opatumphun, Oupahat, Oupatharm, Oupathem, Oupathom, Oupatthaya, Oupatump, Oupetch, Ouphad, Ouphatum, Ouphithak, Ouppadidsri, Ouppamarn, Ouppatchar, Ouppatha, Ouppathamp, Ouppathum, Ouppatranpeecha, Ouptha, Padron, Pathagorn, Pathree, Patradol, Patraorn, Patraprn, Patrawion, Patronising, Patropong, Phanthubandity, Phatraon, Phatron, Ponsorm,