| Thai League Cup | |
| Year: | 2021–22 |
| Other Titles: | Hilux Revo League Cup |
| Country: | Thailand |
| Num Teams: | 75 |
| Defending Champions: | PT Prachuap (2019) |
| Matches: | 74 |
| Goals: | 240 |
| Top Goal Scorer: | Ricardo Santos (6 goals) |
| Player: | Jonathan Bolingi |
| Prevseason: | 2020 (Cancelled) |
| Nextseason: | 2022–23 |
The 2021–22 Thai League Cup is the 12th season in the second era of a Thailand's knockout football competition. All games are played as a single match. It was sponsored by Toyota Motor Thailand, and known as the Hilux Revo League Cup (th|ไฮลักซ์ รีโว่ ลีกคัพ) for sponsorship purposes, Hilux Revo is a truck model of Toyota. 75 clubs were accepted into the tournament, and it began with the first qualification round on 13 October 2021 and concluded with the final on 29 May 2022. The tournament has been readmitted back into Thai football after a 10-year absence. The prize money for this prestigious award is said to be around 5 million baht and the runners-up will be netting 1 million baht.
This is the first edition of the competition and the qualifying round will be played in regions featuring clubs from the Thai League 3.
| Round | Date | Matches | width=100 | Clubs ! | New entries this round |
|---|---|---|---|---|---|
| First qualification round | 13 October 2021 | 7 | 14 → 7 | 14 2021–22 Thai League 3 | |
| Second qualification round | 20 October 2021 | 20 | 33 2021–22 Thai League 3 | ||
| Qualification play-off round | 3–24 November 2021 | 16 | 20 + 12 → 16 | 12 2021–22 Thai League 2 | |
| First round | 12 January 2022 | 16 | 16 + 16 → 16 | 16 2021–22 Thai League 1 | |
| Second round | 9 February 2022 | 8 | 16 → 8 | ||
| Quarter-finals | 12–13 March and 8 May 2022 | 4 | 8 → 4 | ||
| Semi-finals | 25 May 2022 | 2 | 4 → 2 | ||
| Final | 29 May 2022 | 1 | 2 → Champions | ||
| Total | 75 clubs | ||||
Note: T1: Clubs from Thai League 1; T2: Clubs from Thai League 2; T3: Clubs from Thai League 3.
There were 14 clubs from 2021–22 Thai League 3 have signed to first qualifying in the 2021–22 Thai League cup. This round had drawn on 28 September 2021.[1] There are 21 goals that occurred in this round.
Northeastern region
The qualifying round would be played in the northeastern region featuring 4 clubs from the 2021–22 Thai League 3 Northeastern Region.
Eastern region
The qualifying round would be played in the eastern region featuring 4 clubs from the 2021–22 Thai League 3 Eastern Region.
Western region
The qualifying round would be played in the western region featuring 2 clubs from the 2021–22 Thai League 3 Western Region.
Southern region
The qualifying round would be played in the southern region featuring 4 clubs from the 2021–22 Thai League 3 Southern Region.
The second qualifying round would be featured 7 clubs that were the winners of the first qualification round[2] and the new entries that were 33 clubs from the 2021–22 Thai League 3. There are 67 goals that occurred in this round.
Northern region
The qualifying round would be played in the northern region featuring 6 clubs from the 2021–22 Thai League 3 Northern Region.
Northeastern region
The qualifying round would be played in the northeastern region featuring 6 clubs from the 2021–22 Thai League 3 Northeastern Region.
Eastern region
The qualifying round would be played in the eastern region featuring 8 clubs from the 2021–22 Thai League 3 Eastern Region.
Western region
The qualifying round would be played in the western region featuring 8 clubs from the 2021–22 Thai League 3 Western Region.
Southern region
The qualifying round would be played in the southern region featuring 6 clubs from the 2021–22 Thai League 3 Southern Region.
Bangkok metropolitan region
The qualifying round would be played in the Bangkok metropolitan region featuring 6 clubs from the 2021–22 Thai League 3 Bangkok Metropolitan Region.
The qualification play-off round would be featured 20 clubs that were the winners of the second qualification round[3] and the new entries that were 12 clubs from the 2021–22 Thai League 2. This round had drawn on 21 October 2021.[4] There are 63 goals that occurred in this round.
The first round would be featured 16 clubs that were the winners of the qualification play-off round including 8 clubs from T2 and 8 clubs from T3[5] and the new entries that were 16 clubs from the 2021–22 Thai League 1. This round had drawn on 8 December 2021.[6] There are 44 goals that occurred in this round.
The second round would be featured 16 clubs that were the winners of the first round including 12 clubs from T1, 1 club from T2, and 3 clubs from T3.[7] This round had drawn on 18 January 2022.[8] There are 27 goals that occurred in this round.
The quarter-finals would be featured 8 clubs that were the winners of the second round including 7 clubs from T1 and 1 club from T3.[9] This round had drawn on 15 February 2022.[10] There are 12 goals that occurred in this round.|}
The semi-finals would be featured 4 clubs that were the winners of the quarter-finals, all are clubs from T1.[11] This round had drawn on 5 April 2022.[12] There are 2 goals that occurred in this round.|}
See main article: article and 2022 Thai League Cup Final. The final would be featured 2 clubs that were the winners of the semi-finals, both are clubs from T1.[13] There are 4 goals that occurred in this round.
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Ricardo Santos | Uthai Thani | 6 |
| 2 |  Jonathan Bolingi | Buriram United | 5 |
 Evgeni Kabaev | Chiangmai | ||
| 4 | Ikhsan Fandi | BG Pathum United | 4 |
| 5 |  Thiraphat Nunsuk | ACDC | 3 |
| Getterson | Chiangrai United | ||
 Diarra Junior Aboubacar | Kanchanaburi | ||
 Mohamed Samir | Krabi | ||
| Phuchakhen Chandaeng | |||
| Mairon Natan Pereira Maciel Oliveira | Songkhla |
| Player | For ! | Against | Result | Date | Round | |
|---|---|---|---|---|---|---|
| Krabi (T3) | Kamphaengphet (T3) | 7–0 (H) | Qualification play-off round | |||
| Evgeni Kabaev5 | Chiangmai (T2) | Marines Eureka (T3) | 8–2 (A) | Qualification play-off round |