| Series | Driver | Season article |
| FIA Formula One World Championship | Ayrton Senna | 1990 Formula One World Championship |
Constructors: McLaren-Honda |
| CART PPG Indy Car World Series | Al Unser Jr. | 1990 CART PPG Indy Car World Series |
Manufacturers: Chevrolet |
Rookies: Eddie Cheever |
| American Racing Series | Paul Tracy | 1990 American Racing Series season |
| International Formula 3000 | Érik Comas | 1990 International Formula 3000 season |
| British Formula 3000 | Pedro Chaves | 1990 British Formula 3000 Championship |
| All-Japan Formula 3000 Championship | Kazuyoshi Hoshino | 1990 Japanese Formula 3000 Championship |
| EFDA Formula Opel Lotus Euroseries | Rubens Barrichello | |
| American Indycar Series | Bill Tempero | 1990 American Indycar Series |
| Australian Drivers' Championship | Simon Kane | 1990 Australian Drivers' Championship |
| Barber Saab Pro Series | Rob Wilson | 1990 Barber Saab Pro Series |
| Cup of Peace and Friendship | Alexandr Potekhin | 1990 Cup of Peace and Friendship |
| Formula König | Herbert Füngeling | 1990 Formula König season |
Teams: König Motorsport |
| Formula Toyota | Masami Kageyama | 1990 Formula Toyota season |
| SCCA Formula Super Vee | Stuart Crow | 1990 SCCA Formula Super Vee season |
| Toyota Atlantic East Coast Championship | Brian Till | 1990 Toyota Atlantic East Coast Championship |
| Toyota Atlantic West Coast Championship | Mark Dismore | 1990 Toyota Atlantic West Coast Championship |
| USAC FF2000 Championship | Vince Puleo Jr. | 1990 USAC FF2000 Championship |
| Formula Three |
| All-Japan Formula Three Championship | Naoki Hattori | 1990 All-Japan Formula Three Championship |
Teams: Le Garage Cox Racing |
| Austria Formula 3 Cup | Josef Neuhauser | 1990 Austria Formula 3 Cup |
| Brazilian Formula Three Championship | Oswaldo Negri Jr. | 1990 Brazilian Formula Three Championship |
Teams: Daccar |
| British Formula Three Championship | Mika Häkkinen | 1990 British Formula Three Championship |
National: Charles Rickett |
| Chilean Formula Three Championship | Kurt Horta | 1990 Chilean Formula Three Championship |
| Formula 3 Sudamericana | Christian Fittipaldi | |
| French Formula Three Championship | Éric Hélary | |
| German Formula Three Championship | Michael Schumacher | 1990 German Formula Three Championship |
: Franz Binder |
| Italian Formula Three Championship | Roberto Colciago | |
| Mexican Formula Three Championship | Carlos Guerrero | 1990 Mexican Formula Three Championship |
| Formula 3 Sweden | Niclas Jönsson | |
| Swiss Formula Three Championship | Jo Zeller | 1990 Swiss Formula Three Championship |
| Formula Renault |
| French Formula Renault Championship | Emmanuel Collard | 1990 French Formula Renault Championship |
| Formula Renault Argentina | Omar Martínez | 1990 Formula Renault Argentina |
| Formula Renault Sport UK | Thomas Erdos | 1990 Formula Renault Sport UK |
Teams: Fortec Motorsport |
| Formula Ford |
| Australian Formula Ford Championship | Russell Ingall | |
| Brazilian Formula Ford Championship | Paulo Garcia | 1990 Brazilian Formula Ford Championship |
| British Formula Ford Championship | Michael Vergers | 1990 British Formula Ford Championship |
| Danish Formula Ford Championship | Steffen Nielsen | |
| Dutch Formula Ford 1600 Championship | Frank ten Wolde | 1990 Dutch Formula Ford 1600 Championship |
| Finnish Formula Ford Championship | Tomi Salomaa | |
| German Formula Ford Championship | Ralf Druckenmüller | |
| Formula Mirage | Keiichi Tsuchiya | 1990 Formula Mirage season |
| New Zealand Formula Ford Championship | Paul Larsen | |
| Portuguese Formula Ford Championship | Pedro Couceiro | |
| Spanish Formula Ford Championship | Pedro de la Rosa | |
| Swedish Formula Ford Championship | Niclas Jönsson | |