Prachuap

The club was founded as Prachuap Football Club back in 2009 where they entered and played in Regional League Division 2 Central & Eastern region. With a limitation of budget and environment, they finished in tenth position out of 12 teams.

In 2010, Prachuap moved to the Southern division. When asked about the reason for the move, they cited insufficient budget and concerns about safety. In the 2011 season, Prachuap targeted a return to join the league again after pulling out in the 2010 season. The new chairman, Songkiat Lim-aroonrak, was appointed and aimed to change the club philosophy for the next generation of success. He considered re-designing the club with a new logo with resemblance of a Wasp. The club also cited with the colour orange and black which than they occupied the Sam Ao Stadium as their permanent home ground.

In 2014, Prachuap won the AIS League Division 2 – Southern Region and advanced through Champions League Round. Prachuap then defeated Thai Honda in the final match and were crowned the title thus earning promotion to the second tier.

In 2015, Prachuap began to play in Thai Division 1 League since the founding of the club in 2009. They finished mid-table, with good performance for their first season.

Rise to the top flight (2017–present)

In 2017, the club changed the team name to "PT Prachuap" to reciprocate for the main sponsor, PTG Energy, which sponsored the club by strengthening the squad with 20 new players and a more experienced coaching staff where Thawatchai Damrong-Ongtrakul was hired as the club head coach. PT Prachuap then finished third in the 2017 Thai League 2 where they earned a promotion to the top flight league.

PT Prachuap then played in the 2018 Thai League where they finished in sixth place in their first season in the top flight league whereby Jonatan Reis became the club highest goalscorer in a season with 26 goals.

In 2019, head coach Thawatchai Damrong-Ongtrakul helms the team all the way to the 2019 Thai League Cup final after beating Chiangrai United 4–3 on penalties shootout in the semi-finals. PT Prachuap came out victorious after defeating Thai giants Buriram United 8–7 on penalties shootout to win their first ever major title in the club history. The club goalkeeper, Nattapong Khajohnmalee also won the 'Best Player' award in the league cup.