Samut Prakan United Football Club (Thai สโมสรฟุตบอลสมุทรปราการยูไนเต็ด) is a Thailand semi professional football club based in Samut Prakan province. They currently play in 2018 Thailand Amateur League Bangkok Metropolitan Region.
In 2010, the club moved into the Regional League Bangkok Area Division, coming up against teams they had beaten in the previous season's FA Cup matches. Hopes were raised on the back of these that they could mount a serious title challenge. This wasn't to be the case and the club came 7th out of 13 teams.
For the 2011 league campaign, the club was renamed Samut Prakan United. It was another season of hopes and the club progressed well on the field to come 3rd, just missing out on the playoffs.
In 2012, the club moved to their new stadium but the change of venue couldn't bring them success as they finished well off the promotion pace in mid-table.