| Competition: | Thai League 4 Champions League |
| Prevseason: | 2018 |
| Nextseason: | 2020–21 (T3) |
The champions league round was the next stage from the regional stage of 2019 Thai League 4. The winners and runners-ups of each regions would qualified to this round to finding 4 clubs promoting to 2020 Thai League 3.[1]
| Team | Qualifying method | |
|---|---|---|
| Uttaradit | Northern region champions | |
| Wat Bot City | Northern region runners-up | |
| Muang Loei United | Northeastern region champions | |
| Huai Thalaeng United | Northeastern region runners-up | |
| Bankhai United | Eastern region champions | |
| Kohkwang | Eastern region runners-up | |
| Hua Hin City | Western region champions | |
| Chainat United | Western region runners-up | |
| Satun United | Southern region champions | |
| Pattani | Southern region runners-up | |
| Pathumthani University | Bangkok Metropolitan region third place | |
| Thonburi University | Bangkok Metropolitan region fourth place |
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Winners, runners-up, third place, and fourth place of 2019 Thai League 4 would promoted to 2020 Thai League 3.[2] [3]
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Muang Loei United won 7–3 on aggregate.
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2–2 on aggregate. Wat Bot City won 6–5 on penalties.