Chainat United Football Club (Thai ชัยนาท ยูไนเต็ด), is a Thai football club based in Chai Nat Province, Thailand.

The head coach of the club is Firdaus Kassim[1] In 2022, Chainat United competed in the Thai League 3 for the 2022–23 season.

The club started the season with a 3–3 home draw with Dragon Pathumwan Kanchanaburi[2] and they ended the season with a 0–1 away defeat to Dragon Pathumwan Kanchanaburi.

[3] The club has finished 5th place in the league of the Western region.

In addition, in the 2022–23 Thai FA Cup Chainat United was defeated 0–2 by Phitsanulok in the qualification round, causing them to be eliminated.