2017 Thai League 4
The 2017 Thai League T4 was the 12th season of the Thai League 4, it had redirected from the regional league division 2, since its establishment in 2006. The 61 clubs will be divided into 6 groups.
Regional League stage All locations
2017
Red Zone : 2017 Thai League 4 Bangkok Metropolitan RegionYellow Zone : 2017 Thai League 4 Eastern Region
Pink Zone: 2017 Thai League 4 Western Region
Green Zone: 2017 Thai League 4 Northern Region
Orange Zone: 2017 Thai League 4 North Eastern Region
Blue Zone: 2017 Thai League 4 Southern Region
List of Qualified Teams
;T4 North;T4 Northeast
;T4 East
;T4 West
;T4 Bangkok
;T4 South
;2017 Thai League 4 Champions League Play-off Round
- Chiangrai City
Champions League Knockout stage
Stadium and locations
| Team | Location | Stadium | Capacity |
| BTU United | Bangkok | Bangkok-Thonburi University Stadium | 1,500 |
| Chanthaburi | Chanthaburi | Chanthaburi PAO. Stadium | 4,800 |
| Chiangrai City | Chiang Rai | Chiangrai Province Stadium | 5,000 |
| JL Chiangmai United | Chiang Mai | Chiangmai Municipality Stadium | 2,500 |
| Marines Eureka | Rayong | Klaeng Municipality Stadium | 1,661 |
| Mashare Chaiyaphum | Chaiyaphum | Chaiyaphum Province Stadium | 2,564 |
| Muangkan United | Kanchanaburi | Kleebbua Stadium | 5,403 |
| Muang Loei United | Loei | Wang Saphung District Stadium | 1,000 |
| North Bangkok University | Pathum Thani | North Bangkok University Stadium | 4,700 |
| Samut Prakan | Samut Prakan | Samut Prakarn SAT Stadium | 3,500 |
| Satun United | Satun | Satun PAO. Stadium | 4,671 |
| Sisaket United | Sisaket | Sri Nakhon Lamduan Stadium | 9,000 |
Play-off round
Runner-up of 2017 Thai League 4 Northern Region and Runner-up of 2017 Thai League 4 Southern Region football teams pass to this round. this round plays sudden death matches. The winner will entered to the First round.First round
Winner of Play-off round and 11 Thai football teams pass to this round. this round provide 2 part to Group A and Group B. Each group has 6 Thai football teams. It is paired to 3 couples and plays Home-Away matches. Thai football teams which take total score over opportunity for win this round and pass to Final round. Away goals rule is used to this tournament.Group A
Chiangrai City won 6–5 on aggregate.----
Chanthaburi won 4–3 on aggregate.
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1–1 on aggregate. BTU United won 7–6 on penalties.
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Group B
JL Chiangmai United won 5–1 on aggregate.----
Muangkan United won 2–1 on aggregate.
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2–2 on aggregate. Marines Eureka won on away goals.
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