The 2023–24 Thai League 3 is the seventh season of the Thai League 3, the third-tier professional league for association football clubs in Thailand, since its establishment in 2017, also known as Rising Sun Fertilizer League due to the sponsorship deal with Rising Sun fertilizer.[2][3] A total of 72 teams would be divided into 6 regions including 11 teams in the Northern region, 13 teams in the Northeastern region, 11 teams in the Eastern region, 11 teams in the Western region, 12 teams in the Southern region, and 14 teams in the Bangkok metropolitan region.
Regional stage
The number of teams in 6 regions including 11 teams in the Northern region, 13 teams in the Northeastern region, 11 teams in the Eastern region, 11 teams in the Western region, 12 teams in the Southern region, and 14 teams in the Bangkok metropolitan region.[4]
Source: Thai League Rules for classification: 1) Points; 2) Head-to-head points; 3) Head-to-head goal difference; 4) Head-to-head goal scored; 5) Overall goal difference; 6) Overall goal scored; 7) Fair play points; 8) Play-off without extra time). (C) Champions; (Q) Qualified for the phase indicated; (R) Relegated Notes:
^ abRongseemaechaithanachotiwat Phayao and Kongkrailas United were administratively relegated to the 2025 Thailand Semi-pro League for failing to meet club licensing standards.[5][6]
^ abUttaradit Saksiam ahead on head-to-head points record; Uttaradit Saksiam 6 pts, Kongkrailas United 0 pts.
^Nakhon Sawan See Khwae City remained in the league after Rongseemaechaithanachotiwat Phayao and Kongkrailas United failed to meet the club licensing criteria for the 2024–25 season, resulting in Nakhon Sawan See Khwae City retaining their spot.[7]
The national championship stage is the next stage from the regional stage. 1st and 2nd places of each zone qualified for this stage by being featured in 2 groups. Teams from the Northern, Northeastern, and Eastern regions would have qualified for the upper group. Meanwhile, teams from the Western, Southern, and Bangkok Metropolitan regions would have qualified for the lower group. Winners, runners-ups, and third-placed of the national championship stage would be promoted to the 2024–25 Thai League 2.
^ abThe head-to-head record and overall goals difference are tied; North Bangkok University 1 pt (overall GD +1), Songkhla 1 pt (overall GD +1). North Bangkok University is ahead on the overall goals scored.