The 2021 AMA Supercross Championship was the 48th season of professional Supercross racing in the United States. The series is sanctioned by the FIM as the world championship of the sport.

Defending champions The following riders are defending champions having won their respective classes in 2020: 450 SX – Eli Tomac (Kawasaki) 250 SX West – N/A (Dylan Ferrandis has moved up to the 450 SX class with Yamaha) 250 SX East – N/A (Chase Sexton has moved up to the 450 SX class with Honda)

Schedule and results The 2021 schedule includes 17 races at seven venues, with all NFL stadia and Hampton using three races (two Saturday and one Tuesday). The two college football stadiums will run on two consecutive Saturdays, while Daytona, which is promoted by NASCAR Holdings and not Feld Entertainment, is the only single event meeting. One new venue, Hampton, held at Atlanta Motor Speedway, previously hosted the Lucas Oil Motocross, also referred as the "outdoor" season, from 1978 to 1980.

+Race Winners Round Date Location Stadium450SX Winner250SX Winner 1 (E) 16 January Houston NRG Stadium Justin Barcia Christian Craig 2 (E) 19 January Eli Tomac Jett Lawrence 3 (E) 23 January Cooper Webb Colt Nichols 4 (E)30 January Indianapolis Lucas Oil Stadium Ken Roczen Colt Nichols 5 (E)2 February Ken Roczen Colt Nichols 6 (E)6 February Ken Roczen Christian Craig 7 (E)13 February Orlando Camping World Stadium Cooper Webb Jett Lawrence 8 (W)20 February Cooper Webb Justin Cooper 9 (W)6 March Daytona Beach Daytona International Speedway Eli Tomac Cameron McAdoo10 (W)13 March Arlington AT&T Stadium Cooper Webb Seth Hammaker11 (W)16 March Cooper Webb Hunter Lawrence12 (W)20 March Cooper Webb Justin Cooper13 (W)10 April Hampton Atlanta Motor Speedway Eli Tomac Nate Thrasher14 (W)13 April Ken Roczen Justin Cooper15 (W)17 April Cooper Webb Nate Thrasher16 (E)24 April Salt Lake CityRice-Eccles Stadium Marvin Musquin Jo Shimoda17 (E/W)1 May Cooper Webb Jett Lawrence

450 SX Entry list TeamConstructorNoRiderRounds Monster Energy Kawasaki Team Kawasaki 1 Eli Tomac All 9 Adam Cianciarulo 1–8 Red Bull KTM Factory Racing Team KTM 2 Cooper Webb All 25 Marvin Musquin All Monster Energy Star Yamaha Racing Yamaha 7 Aaron Plessinger All 14 Dylan Ferrandis All 27 Malcolm Stewart All Muc-Off Honda Honda 10 Justin Brayton 1–7, 10–11 49 Mitchell Oldenburg 8–9, 12–14 Team Chiz Yamaha 11 Kyle Chisholm 1–14, 17 SmarTop/Bullfrog Spas/MotoConcepts Honda Honda 12 Shane McElrath 7–9 20 Broc Tickle All 37 Benny Bloss 1–11, 13–17 40 Vince Friese 1–13 Rockstar Energy Husqvarna Factory Racing Team Husqvarna 15 Dean Wilson 1–4, 7–17 16 Zach Osborne 1–8 21 Jason Anderson All Rocky Mountain ATV/MC KTM KTM 17 Joey Savatgy All 19 Justin Bogle 1–11, 13 Team Honda HRC Honda 23 Chase Sexton 1–2, 9–17 94 Ken Roczen All Twisted Tea HEP Suzuki Suzuki 28 Brandon Hartranft 1–12, 15–17 34 Max Anstie 8–17 722 Adam Enticknap 1–8, 13–17 Team Tedder KTM Racing KTM 36 Martin Davalos 1–15 Dakota Tedder Ikthus Brittenum Kawasaki Kawasaki 43 Fredrik Noren 1–11, 13–14, 16–17 System 3 Offroad Kawasaki 44 Tyler Bowers 7–17 Troy Lee Designs Red Bull Gas Gas Gas Gas 51 Justin Barcia All SGB Racing Babbitt's Online Kawasaki 57 Justin Rodbell 1–7, 13–15, 17 83 Alex Ray 1–6, 8, 10–17 309 Jeremy Smith All 330 AJ Catanzaro All Team Solitaire Nuclear Blast Yamaha Yamaha 69 Robbie Wageman 16 Auto Owners Insurance KTM 70 Henry Miller 9–17 TiLube Storm Lake Honda Honda 76 Grant Harlan 9 JSR Motorsports KTM 81 Justin Starling All Mountain Motorsports Yamaha 84 Josh Hill 13–15 Team TPJ Fly Racing KTM 85 Kevin Moranz 8–13 All South Munn Racing Husqvarna 87 Curren Thurman 9–15 MADD Parts DEMX Kawasaki 88 Logan Karnow 8–15 282 Theodore Pauli All 848 Joan Cros All Race Driven KTM KTM 99 Hunter Sayles 8–9 Yamaha 100 Dirco Van der Westhuizen 13–15 Team All South Husqvarna 114 Nick Schmidt All 421 Vann Martin All 976 Joshua Greco All Team BWR Engines Honda 118 Cheyenne Harmon 16–17 185 Wilson Fleming 13–15 805 Carlen Gardner 1–10 Team Faith Kawasaki 120 Todd Bannister 17 Westside Motorsports Kawasaki 121 Chris Howell 1–3, 7, 16–17 Ronnie Prado Company KTM 124 Lane Shaw 10–12 Kawasaki 501 Scotty Wennerstrom All Team PR-MX Kawasaki 125 Luke Neese 13–15 280 Cade Clason All 519 Joshua Cartwright 10–17 951 Ryan Surratt 16 952 Ludovic Macler 1–8 DMP Motorsports Honda 138 David Pulley 17 Suzuki 141 Richard Taylor 8, 10–12 Partzilla.com Yamaha Yamaha 184 Scott Champion 1–3, 10–15 Yamaha 193 Hunter Schlosser 8, 10–12 KTM 204 Kyle Greeson 17 Motorsport Hillsboro KTM 216 Devin Harriman 8–11 Rides Unlimited KTM 364 Chad Saultz 8–9 JMC Motorsports Husqvarna 441 Scott Meshey 9, 13–14 RJC Racing Kawasaki 447 Deven Raper All KTM 509 Alexander Nagy 1, 8–9, 17 Yamaha 512 Austin Cozadd 9–15 Advanced Electric Inc. Kawasaki 597 Mason Kerr 1–2, 8–11, 13–15, 17 Husqvarna 606 Ronnie Stewart 1–3, 7–15 KTM 625 Jonah Geistler 8–9 Alien Lab CBD Kawasaki 637 Bobby Piazza 1–2, 8–15 Leininger International Honda 795 Aaron Leininger 1–3, 5–10 ShredCo Stahlman Powersports Kawasaki 824 Carter Stephenson 1–6 Yamaha 916 Justin Rando 7–9 HRT Racing Honda 981 Austin Politelli 1–5, 7–9 Yankton Motorsports Kawasaki 996 Preston Taylor 6, 10–11

Championship Standings Pos Rider Bike HO1 HO2 HO3 IN1 IN2 IN3 OR1 OR2 DAY AR1 AR2 AR3 HA1 HA2 HA3 SL1 SL2 Points 1 Cooper Webb KTM 9 4 1 3 4 2 1 1 2 1 1 1 3 6 1 2 1 388 2 Ken Roczen Honda 2 5 2 1 1 1 2 4 4 6 3 2 9 1 2 6 10 353 3 Eli Tomac Kawasaki 13 1 5 2 3 7 5 6 1 8 2 3 1 5 3 10 9 326 4 Justin Barcia Gas Gas 1 9 4 13 2 19 4 3 6 2 4 4 10 4 5 14 7 289 5 Aaron Plessinger Yamaha 8 16 7 9 5 11 6 9 3 5 6 9 6 8 4 8 8 264 6 Malcolm Stewart Yamaha 5 7 6 11 10 4 9 7 5 14 13 6 11 22 6 3 5 248 7 Dylan Ferrandis Yamaha 7 2 12 6 9 8 22 11 11 22 8 7 5 11 7 4 4 237 8 Jason Anderson Husqvarna 15 8 8 7 DNQ 6 8 5 7 3 7 5 4 3 14 7 22 237 9 Marvin Musquin KTM 3 6 13 10 11 3 7 2 21 DNQ 22 7 7 9 1 2 231 10 Joey Savatgy KTM 11 21 14 8 8 9 13 16 12 7 11 8 8 10 11 11 6 207 11 Dean Wilson Husqvarna 12 11 11 DNQ 12 12 10 9 10 10 DNQ 9 8 9 11 165 12 Chase Sexton Honda 14 22 8 4 5 21 2 2 10 5 3 162 13 Broc Tickle Honda 17 13 17 14 12 13 DNQ 13 22 DNQ 17 11 14 13 13 12 16 128 14 Martin Davalos KTM 18 20 16 15 14 15 16 17 16 10 9 16 12 12 12 124 15 Zach Osborne Husqvarna 10 10 9 5 7 10 3 8 123 16 Adam Cianciarulo Kawasaki 4 12 3 4 6 5 10 21 120 17 Justin Brayton Honda 6 3 10 12 22 12 11 13 DNQ 96 18 Vince Friese Honda 16 15 19 17 19 14 15 15 13 11 14 12 21 94 19 Kyle Chisholm Yamaha 19 14 18 20 15 17 19 20 17 15 15 15 15 DNQ 15 88 20 Justin Bogle KTM DNQ DNQ 20 16 16 16 18 10 9 12 12 DNQ 78 21 Max Anstie Suzuki 18 14 16 16 13 22 14 16 13 12 76 22 Benny Bloss Honda DNQ 19 15 19 13 22 14 19 18 20 DNQ DNQ DNQ 22 16 13 66 23 Tyler Bowers Kawasaki DNQ 22 DNQ DNQ 19 20 16 15 15 15 14 48 24 Cade Clason Kawasaki DNQ DNQ DNQ DNQ 21 21 DNQ DNQ 20 19 18 DNQ 17 17 20 17 19 41 25 Brandon Hartranft Suzuki 21 17 DNQ 18 17 DNQ DNQ DNQ 19 DNQ DNQ 18 19 18 DNQ 37 26 Alex Ray Kawasaki 22 18 DNQ DNQ 20 DNQ DNQ DNQ 17 DNQ 19 20 DNQ 18 DNQ 18 32 27 Mitchell Oldenburg Honda DNQ 15 14 13 21 29 28 Justin Starling KTM DNQ DNQ DNQ DNQ DNQ DNQ 20 DNQ DNQ DNQ 20 17 DNQ 18 DNQ 19 17 27 29 Shane McElrath Honda 17 14 DNQ 15 30 Josh Hill Yamaha DNQ 16 17 13 31 Carlen Gardner Honda DNQ DNQ 21 DNQ 18 18 DNQ DNQ DNQ DNQ 12 32 Fredrik Noren Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ 21 DNQ DNQ DNQ DNQ 18 DNQ 21 20 12 33 Kevin Moranz KTM DNQ DNQ 18 21 DNQ 19 11 34 Adam Enticknap Suzuki 20 DNQ DNQ 22 DNQ 20 DNQ DNQ DNQ DNQ 21 DNQ DNQ 9 35 Henry Miller KTM DNQ DNQ DNQ DNQ DNQ 19 DNQ 20 DNQ 7 36 Scott Champion Yamaha DNQ DNQ DNQ 21 DNQ DNQ DNQ 20 DNQ 5 37 Austin Politelli Honda DNQ DNQ 22 21 DNQ DNQ DNQ DNQ 3 38 Joan Cros Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 22 DNQ DNQ DNQ DNQ DNQ 21 3 39 Joshua Cartwright Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ 22 DNQ 1 Theodore Pauli Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Jeremy Smith Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Nick Schmidt Husqvarna DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 AJ Catanzaro Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Vann Martin Husqvarna DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Joshua Greco Husqvarna DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Deven Raper Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Scotty Wennerstrom Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Ronnie Stewart Gas Gas DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Justin Rodbell Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Bobby Piazza Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Mason Kerr Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Aaron Leininger Honda DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Ludovic Macler Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Logan Karnow Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Curren Thurman Husqvarna DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Austin Cozadd Yamaha DNQ DNQ DNQ DNQ DNQ DNQ DNQ 0 Carter Stephenson Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ 0 Chris Howell Kawasaki DNQ DNQ DNQ DNQ DNQ DNQ 0 Devin Harriman KTM DNQ DNQ DNQ DNQ 0 Hunter Schlosser Yamaha DNQ DNQ DNQ DNQ 0 Richard Taylor Suzuki DNQ DNQ DNQ DNQ 0 Alexander Nagy KTM DNQ DNQ DNQ DNQ 0 Preston Taylor Kawasaki DNQ DNQ DNQ 0 Justin Rando Yamaha DNQ DNQ DNQ 0 Scott Meshey Husqvarna DNQ DNQ DNQ 0 Lane Shaw KTM DNQ DNQ DNQ 0 Luke Neese Kawasaki DNQ DNQ DNQ 0 Wilson Fleming Honda DNQ DNQ DNQ 0 Dirco Van der Westhuizen Yamaha DNQ DNQ DNQ 0 Hunter Sayles KTM DNQ DNQ 0 Chad Saultz KTM DNQ DNQ 0 Jonah Geistler KTM DNQ DNQ 0 Cheyenne Harmon Honda DNQ DNQ 0 Grant Harlan Honda DNQ 0 Robbie Wageman Yamaha DNQ 0 Ryan Surratt Kawasaki DNQ 0 Kyle Greeson KTM DNQ 0 Todd Bannister Kawasaki DNQ 0 David Pulley Honda DNQ 0 Pos Rider Bike HO1 HO2 HO3 IN1 IN2 IN3 OR1 OR2 DAY AR1 AR2 AR3 HA1 HA2 HA3 SL1 SL2 Points

250 SX East Entry list