Northern Nakhon Mae Sot United Football Club (Thai นอร์ทเทิร์น นครแม่สอด ยูไนเต็ด), is a Thai football club based in Mae Sot in Tak, Thailand. The club is currently playing in the Thai League 3.
In 2022, Nakhon Mae Sot United competed in the Thai League 3 for the 2022–23 season. It is their 4th season in the professional league. The club started the season with a 1–0 home win over Nan and they ended the season with a 0–2 away defeat to Nan. The club has finished 10th place in the league of the Northern region. In addition, in the 2022–23 Thai League Cup Nakhon Mae Sot United was defeated 1–2 by Chiangrai Lanna in the first qualification round, causing them to be eliminated.