Somchai
Somchai (, ) is a Thai given name used by males. It is the most common male given name in Thailand, with 240,000 persons using the name in 2012.

Persons with the given name Somchai include:

Somchai Wongsawat, former Prime Minister of Thailand
Somchai Neelapaijit, human rights activist
Somchai Subpherm, football coach
Somchai Chuayboonchum, football manager, and former footballer
Somchai Han-iang, footballer
Somchai Singmanee, footballer
Somlek Sakdikul, also known as Somchai, Thai film actor

In addition to สมชาย, a few other similar-sounding Thai names are also transcribed as Somchai. These include สมชัย, สมไชย, สมไชย์, etc., which are pronounced , with a short second syllable.

Persons with the name Somchai (สมชัย) include:
Somchai Katanyutanon, cartoonist writing under the pen name Chai Rachawat
Somchai Lyowarin, the birth name of Win Lyovarin, Thai novelist/writer