Last name เพณี (Peni 
, Pheni 
, เพณี 
) , in all the world, is quite a common cognomen. The last name เพณี is habitual in Papua New Guinea, where it is quite a common surname, Indonesia, where it is quite a rare surname, and New Zealand. In absolute terms, it is the most numerous in Indonesia, Papua New Guinea, and South Africa. More frequently, เพณี is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Peni | Papua New Guinea, South Africa, Fiji, India, Indonesia |
| Pheni | China, South Africa, Malaysia, India, Indonesia |
| เพณี | Thailand |