Family name บุญนิธิ (บุญนิธิ 
, Boonnithi , Bunnithi 
) , globally, is a rare surname. The cognomen บุญนิธิ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, บุญนิธิ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| บุญนิธิ, Boonnithi | Thailand |
| Bunnithi | United States, Thailand |