| Дата | Событие | Место |
| 14 Apr | One Championship One on TNT 2 | Singapore Indoor Stadium, Singapore | |
| 16 Apr | Evolution Of Combat Fight Night 8 | Morecambe, England | |
| 16 Apr | Bellator 257 Nemkov vs. Davis 2 | Mohegan Sun Arena, Uncasville, Connecticut, United States | |
| 16 Apr | Respect FC Friday Fight Nights | Star Event Center, Hannover, Germany | |
| 16 Apr | LFA 104 April 16 | Grand Casino Hotel & Resort, Shawnee, Oklahoma, United States | |
| 17 Apr | WTKF 6 World Total Kombat Federation 6: Romankevich vs. Karakus | Beijing Hotel, Minsk, Belarus | |
| 17 Apr | BYB Extreme Fighting Series: Russia vs. USA | Cheyenne, Wyoming, United States | |
| 17 Apr | MMA Series 30 FCP Kulikovo Pole 7 | Sobranie Casino, Kaliningrad, Russia | |
| 17 Apr | OSE Vladimir Grachev Memorial 2021 | Kursk, Russia | |
| 17 Apr | Triller Paul vs. Askren | Mercedes-Benz Stadium, Atlanta, Georgia | |
| 17 Apr | BFF Beast Championship 7: King Of The North | Cairns, Queensland, Australia | |
| 17 Apr | Storm MMA Storm Damage 13 | Southern Cross Stadium, Tuggeranong, Canberra, Australia | |
| 17 Apr | ReciFight 6 ReciFight MMA | Pernambuco, Brazil | |
| 17 Apr | OFC 3 Open Fighting Championship 3 | Tinkoff Arena, St. Petersburg, Russia | |
| 17 Apr | XFC 48 Xtreme Fighting Championships | Dunedin, New Zealand | |
| 17 Apr | GCF 55 Gladiator Combat Fight 55 | Parana, Brazil | |
| 17 Apr | SHP 60 Strike Hard Productions 60 | Macon Marriott City Center, Macon, Georgia, United States | |
| 17 Apr | Thunder Fight Thunder Strikers 2 | Sao Paulo, Sao Paulo, Brazil | |
| 17 Apr | MTF 25 Hurricane | Washington City Legacy Park, Hurricane, Utah, United States | |
| 17 Apr | TFC 4 Tucuman Fighting Championship 4 | Club Barrio Jardin, Tucuman, Argentina | |
| 17 Apr | Showcase MMA Rumble on the River 4 | Crab Catchers, Little River, South Carolina, United States | |
| 17 Apr | Coastal Combat 9 TBA | Sunshine Coast, Queensland, Australia | |
| 17 Apr | UFC Fight Night Whittaker vs. Costa | UFC Apex, Las Vegas, Nevada, United States | |
| 17 Apr | MFP Amur Challenge 19 | Arena Ostrova, Blagoveshchensk, Russia | |
| 17 Apr | Adrenalina MMA Desafio Adrenalina 3 | Uruguay | |
| 18 Apr | OSE Cup Of Novosibirsk 2021 | Novosibirsk, Russia | |
| 18 Apr | Zst Zst 70 | GEN Sports Palace, Shinjuku, Tokyo, Japan | |
| 18 Apr | Fury FC 45 Fury Fighting Championship 45 | Bayou City Event Center, Houston, Texas, United States | |
| 18 Apr | Shooto The Shooto Okinawa Vol. 4 | Music Town Otoichiba, Okinawa, Japan | |
| 21 Apr | One Championship One on TNT 3 | Singapore Indoor Stadium, Singapore | |