반카이 유나이티드

Bankhai United was founded in 2012, they are the local football team of Ban Khai district, Rayong province. In January 2012 they purchased the playing license of Khǒr Royal Cup from Bantungked School F.C.

On 9 January 2012 they played first ever match with Sports Association of Rayong Province F.C. in Khǒr Royal Cup 2011 season and win 4–1. In their first season they qualified to the semi-final before defeated to Krung Thonburi F.C. 3–2.

In Khǒr Royal Cup 2012 season they were in round of 16 and defeated to Rayong Province in penalty shoot-out. In 2013 season they qualified to the semi-final again and draw with Rajapruek University F.C. 2–2 but defeated in penalty shoot -out.

In 2014 they defeated in round of 16 to Army Welfare Department F.C. 1–2 and fall in the first round of 2015 season

In 2022, Bankhai United competed in the Thai League 3 for the 2022–23 season. It is their 6th season in the professional league. The club started the season with a 1–0 home win over Assawin Kohkwang United and they ended the season with a 1–0 away win over Assawin Kohkwang United. The club has finished 8th place in the league of the Eastern region. In addition, in the 2022–23 Thai League Cup Bankhai United was defeated 0–1 by Rajpracha in the qualification play-off round, causing them to be eliminated.