Reinier de Ridder (21-2, 16) was born in Tilburg, Netherlands on September 7, 1990. At the age of 22 years on June 1, 2013, he made his professional MMA debut against Marco Wuest, winning the fight via 1st-round submission.
On November 9, 2024, 34-year old Reinier de Ridder made his UFC debut on his 20th professional MMA fight at UFC Fight Night: Magny vs. Prates against a 36-year old Gerald Meerschaert, winning the fight in the 3rd round via submission.
Ridder's last fight was a 5-round split decision win against Robert Whittaker at UFC on ABC: Whittaker vs. de Ridder at age 34 on July 26, 2025. He is on a 5-fight winning streak.
He has fought four times in the UFC, and has a record of 4 wins and 0 losses in the promotion.
Some of Reinier de Ridder's best fights have been against Aung La Nsang, Vitaly Bigdash, Kevin Holland, Bo Nickal, Gerald Meerschaert, Fan Rong and Robert Whittaker.
Ridder has 2 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
23  | Jul 26, 2025 34 years, 10 months 21-2 (16) | 34 years, 7 months 26-8 (15) | UFC | MD | 5 | SD | WIN |
22  | May 3, 2025 34 years, 7 months 20-2 (16) | 29 years, 3 months 7-0 (6) | UFC | MD | 2 | TKO | WIN Knees |
21  | Jan 18, 2025 34 years, 4 months 19-2 (15) | 32 years, 2 months 26-12 (21) | UFC | MD | 1 | SUB | WIN Rear-naked choke |
20  | Nov 9, 2024 34 years, 2 months 18-2 (14) | 36 years, 10 months 37-17 (31) | UFC | MD | 3 | SUB | WIN Arm-triangle choke |
19 | Jul 27, 2024 33 years, 10 months 17-2 (13) | Magomedmurad Khasaev | MD | 1 | TKO | WIN Punches | |
18  | Mar 1, 2024 33 years, 5 months 16-2 (12) | 36 years, 1 months 13-0 (13) | ONE | MD | 3 | TKO | LOSS Retirement Lost ONE middleweight title |
17 | Dec 3, 2022 32 years, 2 months 16-1 (12) | 34 years, 10 months 11-0 (11) | ONE | LHW | 1 | KO | LOSS Punches Lost ONE light-heavyweight title |
16  | Jul 22, 2022 31 years, 10 months 16-0 (12) | 37 years, 11 months 12-2 (10) | ONE | MD | 1 | CKO | WIN Inverted triangle choke Defended ONE middleweight title |
15 | Feb 25, 2022 31 years, 5 months 15-0 (12) | Kiamrian Abbasov | ONE | MD | 3 | SUB | WIN Arm-triangle choke Defended ONE middleweight title |
14  | Apr 28, 2021 30 years, 7 months 14-0 (11) | 35 years, 11 months 26-11 (24) | ONE | LHW | 5 | UD | WIN Won ONE light-heavyweight title |
13 | Oct 30, 2020 30 years, 1 months 13-0 (11) | 35 years, 5 months 26-10 (24) | ONE | MD | 1 | SUB | WIN Rear-naked choke Won ONE middleweight title |
12 | Feb 7, 2020 29 years, 5 months 12-0 (10) | Leandro Ataides | ONE | LHW | 3 | UD | WIN |
11 | Jun 15, 2019 28 years, 9 months 11-0 (10) | Gilberto Galvão | ONE | LHW | 2 | KO | WIN Knees |
10  | Jan 25, 2019 28 years, 4 months 10-0 (9) | 25 years, 3 months 17-1 (16) | ONE | LHW | 1 | CKO | WIN Brabo choke |
9 | Mar 10, 2018 27 years, 6 months 9-0 (9) | Warren Allison | MD | 1 | SUB | WIN Rear-naked choke | |
8 | Oct 21, 2017 27 years, 1 months 8-0 (8) | Shota Gvasalia | MD | 1 | SUB | WIN Rear-naked choke | |
7 | May 27, 2017 26 years, 8 months 7-0 (7) | Jaouad Ikan | MD | 1 | SUB | WIN Armbar | |
6 | Apr 8, 2017 26 years, 7 months 6-0 (6) | Lamine Talbi | MD | 3 | SUB | WIN Rear-naked choke | |
5 | Mar 11, 2017 26 years, 6 months 5-0 (5) | Markus Prödl | MD | 2 | TKO | WIN Punches | |
4 | Oct 29, 2016 26 years, 1 months 4-0 (4) | Alexander Heinrich | LHW | 1 | TKO | WIN Knees and punches | |
3 | May 21, 2016 25 years, 8 months 3-0 (3) | Michaelis Efstratiou | LHW | 1 | SUB | WIN Arm-triangle choke | |
2 | Oct 10, 2015 25 years, 1 months 2-0 (2) | Rene Hoppe | LHW | 2 | SUB | WIN Armbar | |
1 | Jun 1, 2013 22 years, 8 months 1-0 (1) | Marco Wuest | LHW | 1 | SUB | WIN Triangle choke |
