Surname Promkul (Promkul 
, พรหมกุล ) , all over the world, is a rare family name. The last name Promkul is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname.
Kowit, Phimphan, Phronthep, Thitawan, Narathip, Nopparat, Vimonmat, Pakaranun, Weerayut, Arphaphon, Chalotorn, Chalumwoot, Rungrawin, Lapatrada, Napatsarawadee, Sittipong, Khwanruethai, Kanyapat, Sirikalya, Montri, Pawida, Prayuk, Pithak, Siriwan, Siriwun, Karnjana, Sirilak, Kanjana, Pra Pisit, Jintana, Naratip, Inthira, Sawittri, Chulita, and Patchadaporn