Series
Driver
Season article
Formula One World Championship
Michael Schumacher
2003 Formula One season
Constructors: Ferrari
CART Championship Series
Paul Tracy
2003 CART season
IndyCar Series
Scott Dixon
2003 IndyCar Series season
Infiniti Pro Series
Mark Taylor
2003 Infiniti Pro Series season
Atlantic Championship
A. J. Allmendinger
2003 Atlantic Championship season
Australian Drivers' Championship
Daniel Gaunt
2003 Australian Drivers' Championship
Barber Dodge Pro Series
Leonardo Maia
2003 Barber Dodge Pro Series
Euro Formula 3000 Series
Augusto Farfus
2003 Euro Formula 3000 Series
Formula Nippon Championship
Satoshi Motoyama
2003 Formula Nippon Championship
Formula Volkswagen Germany
Jaap van Lagen
2003 Formula Volkswagen Germany season
International Formula 3000 Championship
Björn Wirdheim
2003 International Formula 3000 Championship
World Series by Lights
Juan Cruz Álvarez
2003 World Series Lights season
World Series by Nissan
Franck Montagny
2003 World Series by Nissan season
Formula Dodge National Championship
Raphael Matos
Masters: Chris Wilcox
Formula Dodge Eastern Championship
Marco Andretti
Masters: Mark Patterson
Formula Dodge Midwestern Championship
Salvador Durán
Masters: John Greist
Formula Dodge Southern Championship
Joe D'Agostino
Masters: John Pew
Formula Dodge Western Championship
Ricky Schmidt
Masters: Jim Mashburn
Skip Barber Challenge
Matt Franc
Formula RUS
Yuri Baiborodov
Russian Formula 1600 Championship
Alexander Tyuryumin
Formula Three
Formula 3 Euro Series
Ryan Briscoe
2003 Formula 3 Euro Series season
Rookie: Christian Klien
Nation: France
Australian Formula 3 Championship
Michael Caruso
2003 Australian Formula 3 Championship
Trophy Class: David Borg
British Formula 3 Championship
C: Alan van der Merwe
2003 British Formula 3 season
N: Ernesto Viso
All-Japan Formula Three Championship
James Courtney
2003 All-Japan Formula Three season
Teams: TOM'S
Engine Makers: Toyota
Engine Tuners: TOM'S
Finnish Formula Three Championship
Andrea Belicchi
German Formula Three Championship
João Paulo de Oliveira
2003 German Formula Three season
Rookie: Sven Barth
Italian Formula Three Championship
Fausto Ippoliti
2003 Italian Formula Three season
Spanish Formula Three Championship
Ricardo Mauricio
2003 Spanish Formula Three season
Teams: Racing Engineering
Trofeo Ibérico: Borja García
Copa de España Júnior: Ricardo Risatti
Formula 3 Sudamericana
Alberto Valério
2003 Formula 3 Sudamericana season
Asian Formula Three Championship
Pepon Marave
Formula Renault
Formula Renault V6 Eurocup
José María López
2003 Formula Renault V6 Eurocup
Teams: ARTA-Signature
Formula Renault 2000 Masters
Esteban Guerrieri
2003 Formula Renault 2000 Masters season
Teams: JD Motorsport
Formula Renault 2000 UK
Lewis Hamilton
2003 Formula Renault 2000 UK season
Winter Series: Jay Howard
Championnat de France Formula Renault 2000
Loïc Duval
Formula Renault BARC
James Gornall
Formula Renault 2000 Italia
Franck Perera
Teams: Prema Powerteam
Winter Series: Pastor Maldonado
Formula Renault 2000 Germany
Ryan Sharp
Formula Renault 2000 Netherlands
Paul Meijer
Formula Renault 2000 Scandinavia
Tom Pedersen
Renault Speed Trophy F2000
Manuel Benz
Mexican Formula Renault Championship
Homero Richards
Formula Renault 2000 Brazil
Allam Khodair
North American Fran Am 2000 Pro Championship
Andrew Ranger
Winter Series: Charles Hall
Asian Formula Renault Challenge
Rodolfo Ávila
Teams: Asia Racing Team
Formula Campus by Renault and Elf
Laurent Groppi
Formula Renault 1600 Argentina
Maximiliano Merlino
Formula Renault 1600 Belgium
Jérôme d'Ambrosio
Formula Junior 1600 Italia powered by Renault
Marino Spinozzi
Winter Series: Domenico Capuano
Formula Junior 1600 Spain
Juan Antonio del Pino
North American Fran Am 1600 Pro Championship
Colin Braun
Formula Super Renault
Federico Lifschitz
Formula BMW
Formula BMW ADAC
Maximilian Götz
2003 Formula BMW ADAC season
Teams: ADAC Berlin-Brandenburg
Formula BMW Asia
Ho-Pin Tung
2003 Formula BMW Asia season
Teams: Team Meritus
F. Baviera Junior Cup
Juan Cáceres