Ratings for events through August 31, 2021. All weight classes/pound-for-pound.
Key: Fighter won recent fight ; Fighter lost recent fight ; Inactive: last rated win > one year ago
| Aug Rank |
Sept Rank |
Fighter | WC | Rating | Rated Record | Org | August results |
| 1 | 1 | Khabib Nurmagomedov | LW | 91.68 | 15-0-0 | UFC |  |
| 2 | 2 | Kamaru Usman | WW | 91.42 | 14-0-0 | UFC | |
| 3 | 3 | Francis Ngannou | HW | 85.73 | 10-2-0 | UFC | |
| 4 | 4 | Jon Jones | LH | 76.36 | 20-1-0 | UFC | --last rated win -18 months. |
| 5 | 5 | Stipe Miocic | HW | 68.31 | 15-4-0 | UFC | --last rated win -12 months. |
| 6 | 6 | Jan Blachowicz | LH | 62.77 | 22-6-0 | UFC | |
| 7 | 7 | Dustin Poirier | LW | 59.23 | 23-6-0 | UFC | |
| 8 | 8 | Alexander Volkanovski | FW | 57.84 | 14-0-0 | UFC | --last rated win -13 months. |
| 9 | 9 | Henry Cejudo | BW | 56.12 | 10-2-0 | UFC | --last rated win -15 months. |
| 10 | 10 | Robert Whittaker | MW | 54.67 | 15-5-0 | UFC | |
| 11 | 11 | Israel Adesanya | MW | 53.40 | 11-1-0 | UFC | |
| 13 | 12 | Gegard Mousasi | MW | 52.35 | 39-7-2 | Bell | Beat #97 John Salter |
| 12 | 13 | Vadim Nemkov | LH | 50.92 | 8-2-0 | Bell | |
| 14 | 14 | Charles Oliveira | LW | 48.64 | 22-8-0 | UFC | |
| 15 | 15 | A.J. McKee | FW | 48.22 | 12-0-0 | Bell | |
| 16 | 16 | Aljamain Sterling | BW | 44.57 | 14-3-0 | UFC | |
| 17 | 17 | Bibiano Fernandes | BW | 43.53 | 21-2-0 | One | --last rated win -22 months. |
| 18 | 18 | Colby Covington | WW | 42.08 | 10-2-0 | UFC | |
| 37 | 19 | Ciryl Gane | HW | 40.44 | 8-0-0 | UFC | Beat #21 Derrick Lewis |
| 20 | 20 | Kyoji Horiguchi | BW | 40.31 | 27-3-0 | Rizi | |
| 19 | 21 | Georges St. Pierre | MW | 39.93 | 24-2-0 | UFC | --last rated win -45 months. |
| 22 | 22 | Beneil Dariush | LW | 38.43 | 16-4-1 | UFC | |
| 23 | 23 | Justin Gaethje | LW | 37.60 | 16-3-0 | UFC | --last rated win -15 months. |
| 24 | 24 | Gilbert Burns | WW | 37.18 | 13-4-0 | UFC | |
| 25 | 25 | Patricio Freire | FW | 36.86 | 19-5-0 | Bell | |
| 26 | 26 | Rafael Lovato Jr. | MW | 36.20 | 7-0-0 | Bell | --last rated win -26 months. |
| 27 | 27 | Daniel Cormier | HW | 35.72 | 18-3-0 | UFC | --last rated win -33 months. |
| 28 | 28 | Leon Edwards | WW | 35.59 | 13-2-0 | UFC | |
| 29 | 29 | Brandon Moreno | FL | 34.54 | 8-2-2 | UFC | |
| 30 | 30 | Ryan Bader | LH | 32.71 | 22-6-0 | Bell | |
| 31 | 31 | Christian Lee | LW | 32.27 | 9-2-0 | One | |
| 51 | 32 | Vicente Luque | WW | 32.03 | 13-2-0 | UFC | Beat #43 Michael Chiesa |
| 32 | 33 | T.J. Dillashaw | BW | 31.21 | 13-3-0 | UFC | |
| 33 | 34 | Adriano Moraes | FL | 30.69 | 8-2-0 | One | |
| 34 | 35 | Philip De Fries | HW | 30.64 | 13-6-0 | KSW | |
| 35 | 36 | Yaroslav Amosov | WW | 29.84 | 8-0-0 | Bell | |
| 36 | 37 | Derek Brunson | MW | 29.74 | 17-7-0 | UFC | |
| 38 | 38 | Islam Makhachev | LW | 29.32 | 12-1-0 | UFC | |
| 39 | 39 | Max Holloway | FW | 29.06 | 20-6-0 | UFC | |
| 40 | 40 | Belal Muhammad | WW | 28.36 | 14-3-0 | UFC | |
| 41 | 41 | Movsar Evloev | FW | 28.20 | 10-0-0 | UFC | |
| 21 | 42 | Derrick Lewis | HW | 27.52 | 14-6-0 | UFC | Lost to #37 Ciryl Gane |
| 159 | 43 | Chris Wade | FW | 26.62 | 14-6-0 | Prof | Beat #42 Bubba Jenkins |
| 46 | 44 | Glover Teixeira | LH | 26.59 | 25-6-0 | UFC | |
| 47 | 45 | Thanh Le | FW | 26.59 | 10-1-0 | One | |
| 44 | 46 | Zabit Magomedsharipov | FW | 26.44 | 9-0-0 | UFC | --last rated win -21 months. |
| 45 | 47 | Curtis Blaydes | HW | 26.32 | 10-3-0 | UFC | --last rated win -14 months. |
| 48 | 48 | Magomed Ankalaev | LH | 26.19 | 8-1-0 | UFC | |
| 49 | 49 | Kai Asakura | BW | 26.12 | 12-3-0 | Rizi | |
| 56 | 50 | Movlid Khaybulaev | FW | 26.02 | 7-0-1 | Prof | Beat #364 Brendan Loughnane |
| 50 | 51 | Demetrious Johnson | FL | 25.28 | 21-4-1 | One | --last rated win -22 months. |
| 52 | 52 | Jingliang Li | WW | 25.01 | 11-4-0 | UFC | |
| 53 | 53 | Brian Ortega | FW | 24.97 | 8-1-0 | UFC | |
| 54 | 54 | Sean Strickland | MW | 24.90 | 18-3-0 | UFC | |
| 55 | 55 | Isao Kobayashi | FW | 24.66 | 24-5-2 | Panc | |
| 65 | 56 | Alexandre Pantoja | FL | 24.45 | 8-3-0 | UFC | Beat #613 Brandon Royval |
| 57 | 57 | Guram Kutateladze | LW | 24.31 | 6-0-0 | UFC | |
| 58 | 58 | Rob Font | BW | 24.08 | 11-3-0 | UFC | |
| 59 | 59 | Islam Mamedov | LW | 24.07 | 9-0-1 | Bell | |
| 60 | 60 | Merab Dvalishvili | BW | 24.02 | 7-2-0 | UFC | |
| 61 | 61 | Muslim Salikhov | WW | 23.81 | 7-1-0 | UFC | |
| 62 | 62 | Roberto de Souza | LW | 23.74 | 9-1-0 | Rizi | |
| 63 | 63 | Sean Brady | WW | 23.64 | 7-0-0 | UFC | |
| 74 | 64 | Azamat Kerefov | FL | 23.34 | 7-0-0 | ACA | Beat #1306 Rasul Albaskhanov |
| 66 | 65 | Tatsuki Saomoto | FL | 23.19 | 14-1-0 | Rizi | |
| 67 | 66 | Artem Reznikov | LW | 23.16 | 5-0-0 | ACA | |
| 64 | 67 | Josh Emmett | FW | 23.15 | 10-2-0 | UFC | --last rated win -14 months. |
| 68 | 68 | Grant Dawson | LW | 22.99 | 9-1-0 | UFC | |
| 69 | 69 | Natan Schulte | LW | 22.96 | 11-2-1 | Prof | |
| 70 | 70 | Abubakar Vagaev | WW | 22.96 | 14-3-0 | ACA | |
| 71 | 71 | Lorenz Larkin | MW | 22.87 | 14-7-0 | Bell | |
| 72 | 72 | Hiromasa Ougikubo | BW | 22.86 | 18-5-1 | Rizi | |
| 73 | 73 | Arnold Allen | FW | 22.82 | 9-0-0 | UFC | |
| 75 | 74 | Jason Jackson | WW | 22.57 | 9-2-0 | Bell | |
| 76 | 75 | Timur Valiev | BW | 22.54 | 9-1-0 | UFC | |
| 77 | 76 | Neil Magny | WW | 22.54 | 17-8-0 | UFC | |
| 78 | 77 | Bryce Mitchell | FW | 22.51 | 8-0-0 | UFC | |
| 79 | 78 | Magomedrasul Khasbulaev | FW | 22.44 | 14-3-0 | ACA | |
| 80 | 79 | Deiveson Figueiredo | FL | 22.44 | 10-2-1 | UFC | |
| 81 | 80 | John Lineker | BW | 22.44 | 13-3-0 | One | |
| 105 | 81 | Ray Cooper III | WW | 22.41 | 14-4-1 | Prof | Beat #471 Rory MacDonald |
| 82 | 82 | Ali Bagov | WW | 22.28 | 14-8-0 | ACA | |
| 83 | 83 | Corey Anderson | LH | 22.22 | 10-4-0 | Bell | |
| 84 | 84 | Kiamrian Abbasov | WW | 22.14 | 5-1-0 | One | |
| 99 | 85 | Mago Magomedkerimov | WW | 22.02 | 13-3-0 | Prof | Beat #920 Sadibou Sy |
| 85 | 86 | Raulian Paiva | BW | 21.95 | 3-0-0 | UFC | |
| 86 | 87 | Valentin Moldavsky | HW | 21.87 | 7-1-0 | Bell | |
| 89 | 88 | Mukhomad Vakhaev | HW | 21.86 | 6-1-1 | ACA | Beat #1845 Raphael Pessoa |
| 87 | 89 | Yuki Motoya | BW | 21.79 | 21-6-0 | Rizi | |
| 88 | 90 | Rae Yoon Ok | LW | 21.78 | 7-2-0 | One | |
| 90 | 91 | Magomedrasul Gasanov | MW | 21.64 | 4-0-0 | ACA | |
| 91 | 92 | Fabricio Andrade | BW | 21.62 | 2-0-0 | One | |
| 92 | 93 | Abdul-Aziz Abdulvakhabov | LW | 21.61 | 8-1-0 | ACA | |
| 93 | 94 | Sergio Pettis | BW | 21.45 | 13-5-0 | Bell | |
| 94 | 95 | Michael Chandler | LW | 21.44 | 18-6-0 | UFC | |
| 95 | 96 | Jiri Prochazka | LH | 21.42 | 15-1-1 | UFC | |
| 117 | 97 | Jared Cannonier | MW | 21.30 | 7-5-0 | UFC | Beat #814 Kelvin Gastelum |
| 96 | 98 | Cory Sandhagen | BW | 21.29 | 7-3-0 | UFC | |
| 98 | 99 | Shinya Aoki | LW | 21.09 | 41-9-0 | One | |
| 100 | 100 | Mateusz Gamrot | LW | 20.95 | 13-1-0 | UFC |