Pattaya United F.C.  Pattaya United Football Club () was a Thai football club based in Pattaya, Chonburi Province. Defunct after 2018 season, The club was renamed to Samut Prakan City and relocated it to Samut Prakan. Pattaya United's first-ever competitive game was against Thailand Division 2 League side Rajpracha in the 2009 Queen's Cup which they won 5–0. For six years the club remained in the TPL, and finished as high as sixth, and fourth in 2010 and 2011 respectively. The Dolphins were relegated to the Yamaha League One in 2014 and promoted to Thai League 1 again in 2016. The club was founded under the name Coke-Bangpra Chonburi FC which derived from the sponsor and the community Bang Phra in the district of Si Racha, the province of Chonburi. After several years in the Provincial League of Thailand, the club was promoted to the Thai Premier League for the 2008 season. As a result of the promotion to the TPL, the team was renamed to "Pattaya United" and moved to the city of Pattaya. In the first season in the top-flight division, the team finished in 11th place at the end of the season. The team moved to Pattaya for the 2008 season, and changed its name to Pattaya United FC (The Dolphins), in their first season under the new name the team finished in 11th place in the Thai Premier League, only avoiding relegation in the final game of the season. However, the following seasons the team improved to finishing as high as sixth, and fourth in 2010 and 2011 respectively. The team which has always been looked at as a "little brother" team to Chonburi FC as they both were owned by the Kunpluem family, an affluence local family in Chonburi province. The club has shown potentials, winning against teams with double or triple its annual budget, winning the hearts of the Thai, and Foreign fans alike. After spending 6 years in the TPL, and the Dolphins were relegated to the Yamaha League One in 2014. During the offseason, the future of the club was uncertain with various speculations. However, in January 2015 the club was sold to Enigma Sports Ventures (ESV), the sporting arm of the Enigma Global. It marked the first change in ownership in the club history, after several lucrative bids were submitted for the Kunpluem family's consideration. The family and Pattaya United board felt that the club's best interest and future lie with Enigma Sports Ventures.