| Upright: | 0.7 |
| Clubname: | Chanthaburi United จันทบุรี ยูไนเต็ด |
| Fullname: | Chanthaburi United Football Club สโมสรฟุตบอลจันทบุรี ยูไนเต็ด |
| Nickname: | The Flame Rubies (ทับทิมเพลิง) |
| Founded: | , as Kohkwang Football Club , as Assawin Kohkwang United Football Club , as Chanthaburi United Football Club |
| Ground: | Rambhai Barni Rajabhat University Stadium Chanthaburi, Thailand |
| Capacity: | 2,000 |
| Chairman: | Prayut Wassanawin |
| Mgrtitle: | Head Coach |
| Manager: | Niwat Siriphokhai |
| League: | Thai League 3 |
| Season: | 2023–24 |
| Position: | Thai League 3, 6th of 11 in the Eastern region |
| Current: | 2023–24 Thai League 3 |
Chanthaburi United Football Club (Thai: สโมสรฟุตบอลจันทบุรี ยูไนเต็ด), is a Thai football club based in Chanthaburi, Thailand. The club is currently playing in the Thai League 3 Eastern region.
In 2022, Assawin Kohkwang United competed in the Thai League 3 for the 2022–23 season. It is their 4th season in the professional league. The club started the season with a 0–1 away defeat to Bankhai United[1] and they ended the season with a 0–1 home defeat to Bankhai United.[2] The club has finished 10th place in the league of the Eastern region. In addition, in the 2022–23 Thai FA Cup Assawin Kohkwang United was defeated 0–3 by Muangthong United in the third round, causing them to be eliminated[3] and in the 2022–23 Thai League Cup Assawin Kohkwang United was defeated 1–2 by Navy in the second qualification round, causing them to be eliminated too.[4]
| Season | League | FA Cup | League Cup | T3 Cup | Top goalscorer | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | P | W | D | L | F | A | Pts | Pos | Name | Goals | |||||
| 2016 | DIV 3 East | 2 | 0 | 1 | 1 | 3 | 5 | 1 | 15th - 21st | Opted out | Ineligible | ||||
| 2017 | TA East | 6 | 4 | 1 | 1 | 18 | 7 | 13 | 3rd - 4th | R1 | Ineligible | ||||
| 2018 | TA East | 6 | 6 | 0 | 0 | 18 | 5 | 18 | bgcolor=gold | 1st | R1 | Ineligible |  Anon Duksee | 4 | |
| 2019 | T4 East | 28 | 18 | 5 | 5 | 51 | 24 | 59 | bgcolor=silver | 2nd | QR | QR2 | Chatchai Narkwijit | 19 | |
| 2020–21 | T3 East | 16 | 6 | 3 | 7 | 23 | 28 | 21 | 7th | QR | Opted out | Watcharaphon Phochat | 5 | ||
| 2021–22 | T3 East | 22 | 8 | 8 | 6 | 29 | 24 | 32 | 6th | Opted out | Opted out | Patipat Kamsat | 11 | ||
| 2022–23 | T3 East | 22 | 5 | 8 | 9 | 19 | 27 | 23 | 10th | R3 | QR2 | Patipat Kamsat | 7 | ||
| 2023–24 | T3 East | 20 | 7 | 4 | 9 | 21 | 21 | 25 | 6th | Opted out | QR1 | QR1 |  Emerson da Silva Tavares | 10 | |
| bgcolor=gold | Champions | bgcolor=silver | Runners-up | Promoted | Relegated |