Home History
| Thailand Division 2 | 2021/10/24 12:00 | Udon Thani FC v Rayong FC | W | 0-2 |
| Thailand Division 2 | 2021/10/16 12:00 | Raj Pracha v Rayong FC | D | 3-3 |
| Thailand Division 2 | 2021/10/13 11:00 | Rayong FC v Trat FC | L | 0-1 |
| Thailand Division 2 | 2021/10/09 11:00 | Nakhon Pathom FC v Rayong FC | W | 1-4 |
| Thailand Division 2 | 2021/10/02 11:00 | Royal Navy v Rayong FC | W | 0-1 |
| Thailand Division 2 | 2021/09/19 11:00 | Rayong FC v Ranong United | L | 0-1 |
| Thailand Division 2 | 2021/09/15 12:30 | Phrae United v Rayong FC | L | 2-0 |
| Thailand Division 2 | 2021/09/12 11:00 | Rayong FC v Muangkan Utd | W | 3-2 |
Away History
| Thailand Premier League | 2021/10/23 12:00 | Chiangrai Utd v Khonkaen United | L | 1-0 |
| Thailand Premier League | 2021/10/16 11:00 | Khonkaen United v Nong Bua Pitchaya | W | 1-0 |
| Thailand Premier League | 2021/10/09 12:00 | Muang Thong United v Khonkaen United | L | 3-1 |
| Thailand Premier League | 2021/10/06 12:00 | Khonkaen United v Nakhon Ratchasima | D | 1-1 |
| Thailand Premier League | 2021/10/03 11:00 | BG Pathum United v Khonkaen United | L | 2-1 |
| Thailand Premier League | 2021/09/25 11:00 | Khonkaen United v Chonburi | L | 0-7 |
| Thailand Premier League | 2021/09/18 10:30 | Port FC v Khonkaen United | L | 2-0 |
| Thailand Premier League | 2021/09/11 11:00 | Khonkaen United v Prachuap FC | W | 2-1 |