The National Championship was the next stage from the regional stage of

2022–23 Thai League 3 The 2022–23 Thai League 3 is the sixth 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 Kongsalak Plus League due to the sponsorship deal w ...

. The winners and runners-ups of each region would qualify for this round to find 3 clubs promoting to

2023–24 Thai League 2 The 2023–24 Thai League 2 was the 26th season of the Thai League 2, the second-tier professional league for Thailand's association football clubs, since its establishment in 1997. A total of 18 teams competed in the league. The season began on 1 ...

Teams

Group stage

Upper region

---- ---- ---- ----

Lower region

---- ---- ---- ----

Knockout stage

Winners, runners-up, and third place of

would be promoted to the

Third place play-offs

Summary

Matches

''Dragon Pathumwan Kanchanaburi won 3–2 on aggregate.''

Finals

Summary

Matches

=1st leg

= ----

=2nd leg

= ''MH Nakhon Si City won 2–1 on aggregate.''

Statistics

Goalscorers

Teams promoted to 2023–24 Thai League 2

Chanthaburi Chanthaburi (, ) is a town ('' thesaban mueang'') in the east of Thailand, on the banks of the Chanthaburi River. It is the capital of the Chanthaburi Province and the Mueang Chanthaburi District. The town covers the two ''tambons'' Talat an ...

(runners-up) :* Dragon Pathumwan Kanchanaburi (third-placed) :* Pattaya Dolphins United (fourth-placed)

References

{{DEFAULTSORT:2022-23 Thai League 3 National Championship Thai League 3 3