The 2017 Thai League T4 (also known as the Euro Cake League for sponsorship reasons) 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 (regions).
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<span style="color:Red;">Red Zone : 2017 Thai League 4 Bangkok Metropolitan Region</span><br> <span style="color:Yellow;">Yellow Zone : 2017 Thai League 4 Eastern Region</span><br> <span style="color:Pink;">Pink Zone: 2017 Thai League 4 Western Region</span><br> <span style="color:Green;">Green Zone: 2017 Thai League 4 Northern Region</span><br> <span style="color:Orange;"> Orange Zone: 2017 Thai League 4 North Eastern Region</span><br> <span style="color:Blue;">Blue Zone: 2017 Thai League 4 Southern Region</span>
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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.
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.
Chiangrai City won 6âÂÂ5 on aggregate.
Chanthaburi won 4âÂÂ3 on aggregate.
1âÂÂ1 on aggregate. BTU United won 7âÂÂ6 on penalties.
JL Chiangmai United won 5âÂÂ1 on aggregate.
Muangkan United won 2âÂÂ1 on aggregate.
2âÂÂ2 on aggregate. Marines Eureka won on away goals.
6 Thai football teams, Which win opportunity, pass to this round. this round provide 2 part to 2017 Thai League 4 champions league round Group A and 2017 Thai League 4 champions league round Group B. Each region has 3 Thai football teams. It plays Round-robin matches. Thai football teams which get champion, runner-up and 3rd position which has the best scores of each region to were promoted to 2018 Thai League 3. Mini-league rule is used to this tournament.
The best third-placed team would promoted to 2018 Thai League 3. <noinclude>