Worldwide, เดียน (Dian 
, เดียน 
) is a widespread gender-neutral first name. The first name เดียน is characteristic of Indonesia, where it is a common unisex name, New Zealand, where it is quite a common masculine name, and Jamaica, where it is quite a common female name (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Indonesia, the United States, and New Zealand. Very seldom, เดียน is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dian | Malaysia, China, Indonesia, United States, New Zealand |
| เดียน | Thailand |
เดียน is also a name for the fictitious and mythical characters: Dian Belmont , the comics character, Adventure Comics; Dian Alberts , the soap opera character, Goede tijden, slechte tijden and Dian , the musical character in the musical The Quaker Girl; a Parisian Actress.