Worldwide, จำนันท์ (Chamnan 
, จำนันท์) is a rare principally male, but very infrequently feminine first name. The forename จำนันท์ is characteristic of Thailand, where it is a rare boy's name, Australia, where it is a very rare feminine name, and the United States, where it is an extremely rare unisex name. Measured by absolute frequency, it is the most numerous in Thailand, the United States, and India. Also, จำนันท์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Chamnan | Cambodia, Australia, Thailand, United States, Malaysia |