Current clubs:
Northern Region: Chattrakan City | Chiangrai TSC1 | Lampang Sports School | Nakhon Sawan1 | Nan | Phichit United1 | TNSU Chiangmai
North Eastern Region: Hi-Tech Chaiyaphum United2 | Pitchaya Bundit College2 | Roi Et PB United | Sisaket City2 | Siwilai | Ubon Poly United2 | Udon Banjan United2 | Vongchavalitkul University2 | Warin Chamrap
Eastern Region: Banbueng | Banbueng City3 | Huasamrong Gateway | Nakhon Nayok3 | Padriew City3 | Sakaeo Hitech Technology3 | Sriracha | TDIC Angsila Saensuk
Western Region: Ayothaya Warrior4 | Kasetsart Academy | Lopburi United4 | Phachi City | Ratchaburi United | Samui United | Samut Songkhram City
Southern Region: PRU6 | Yala City6
Bangkok Metropolitan Region: BSL United5 | Dome | EGY Thai5 | Futera United | Look E-San | Sathorn UTK5
Former clubs:
Ongoing: Angsila3 | Bang Kapi5 | BFB Pattaya City3 | Chiangmai Country1 | FC Korat2 | Hippo5 | Kalasin United2 | Khelang United1 | Minburi City5 | Pakchong SCK4 | Prachinburi City3 | RSU5 | Singburi Bangrajun4 | Suranaree Black Cat2 | Thap Luang United4 | Ubon Kids City2
Dissolved: N/A
Related:
Thai League 3 | Thailand Amateur League | Thai FA Cup
Notes
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|| 1
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Original 2023 clubs in Northern Region
|| 2
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Original 2023 clubs in North Eastern Region
|| 3
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Original 2023 clubs in Eastern Region
|| 4
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Original 2023 clubs in Western Region
|| 5
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| Original 2023 clubs in Bangkok Metropolitan Region
|| 6
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Original 2024 clubs in Southern Region
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