Cognomen อุตสาหจิต (อุตสาหจิต 
) , in the world, is a very rare last name. The family name อุตสาหจิต is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| อุตสาหจิต | Thailand |
| วิธิต อุตสาหจิต TH (b. 1953) |
|