Family name กาญจนบุตร (กาญจนบุตร 
, Kanjanabut , Kanchanabut 
) , worldwide, is a rare cognomen. The cognomen กาญจนบุตร is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| กาญจนบุตร, Kanjanabut, Kanjanabutr | Thailand |
| Kanchanabut | United States, Thailand |