Globally, พันธุ์เอก (พันธุ์เอก 
) is a very rare male given name. The forename พันธุ์เอก is habitual in South-eastern Asia, particularly Thailand, where it is a very rare masculine name. More prevalently, พันธุ์เอก is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| พันธุ์เอก | Thailand |