In 2012 the club's first success was a runners-up spot in Division 1 and the team were promoted back into the Thai Premier League.

However, after starting the season with a seven-match unbeaten run, they eventually finished fourth, losing only nine times in their thirty-two game campaign.

The Under 19 team under the guidance of Nigerian coach Sakiru Fagbohun, known as "Coach Ken", reached the final of the 2014 Coke Cup, where they narrowly lost 2–1 to three-time champions Buriram United, this achievement was remarked greatly as Suphanburi Fc u19 defied the odds and challenged the three-time champions competitively.

The club have embarked on an ambitious six-year plan to create teams from Under 13 to Under 18, starting with a new intake of Under 13 players each year.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.