This list of 1984 motorsport champions is a list of national or international auto racing series with a Championship decided by the points or positions earned by a driver from multiple races.

Series	Champion	Refer
World of Outlaws Sprint Car Series	Steve Kinser
	Teams: Karl Kinser Racing

Series	Champion	Refer
NHRA Winston Drag Racing Series	Top Fuel: Joe Amato	1984 NHRA Winston Drag Racing Series
	Funny Car: Mark Oswald
	Pro Stock: Lee Shepherd

Series	Driver	Season article
CIK-FIA Karting World Championship	FK: Jorn Haase
	FC: Gabriele Tarquini
CIK-FIA Junior World Cup	Andrea Gilardi
CIK-FIA Karting European Championship	FK: Mike Wilson
	ICC: Riccardo Franchini
	ICA: Stefano Modena
World Superkart Championship	Lennart Bohlin

Series	Driver	Season article
500cc World Championship	Eddie Lawson	1984 Grand Prix motorcycle racing season
250cc World Championship	Christian Sarron
125cc World Championship	Ángel Nieto
80cc World Championship	Stefan Dörflinger
Speedway World Championship	Erik Gundersen	1984 Individual Speedway World Championship
AMA Superbike Championship	Fred Merkel
Australian Superbike Series	Rob Phillis

Series	Driver	Season article
FIA Formula One World Championship	Niki Lauda	1984 Formula One World Championship
	Constructors: McLaren-TAG
CART PPG Indy Car World Series	Mario Andretti	1984 CART PPG Indy Car World Series
	Manufacturers: Cosworth
	Rookies: Roberto Guerrero
Australian Drivers' Championship	John Bowe	1984 Australian Drivers' Championship
Cup of Peace and Friendship	Ulli Melkus	1984 Cup of Peace and Friendship
	Nations: East Germany
SCCA Formula Super Vee	Arie Luyendyk	1984 SCCA Formula Super Vee season
South African National Drivers Championship	Ian Scheckter	1984 South African National Drivers Championship
Formula Atlantic West Coast	Dan Marvin	1984 Formula Atlantic West Coast season
Formula Nacional	Antonio Cutillas	1984 Formula Nacional
USAC Championship Car	Rick Mears	1983–84 USAC Championship Car season
Formula Two
European Formula Two Championship	Mike Thackwell	1984 European Formula Two Championship
All-Japan Formula Two Championship	Satoru Nakajima	1984 Japanese Formula Two Championship
Australian Formula 2 Championship	Peter Glover	1984 Australian Formula 2 Championship
South American Formula Two Championship	Guillermo Maldonado	1984 South American Formula Two Championship
Formula Three
FIA European Formula 3 Championship	Ivan Capelli	1984 FIA European Formula 3 Championship
All-Japan Formula Three Championship	Shuji Hyoudo	1984 All-Japan Formula Three Championship
	Teams: Hayashi Racing
Austria Formula 3 Cup	Ernst Franzmeier	1984 Austria Formula 3 Cup
British Formula Three Championship	Johnny Dumfries	1984 British Formula Three Championship
	National: Keith Fine
Chilean Formula Three Championship	Kurt Horta	1984 Chilean Formula Three Championship
Finnish Formula Three Championship	Jari Koiranen	1984 Finnish Formula Three Championship
	Teams: Lahti Racing
French Formula Three Championship	Olivier Grouillard	1984 French Formula Three Championship
	Teams: Oreca
German Formula Three Championship	Kurt Thiim	1984 German Formula Three Championship
Italian Formula Three Championship	Alessandro Santin	1984 Italian Formula Three Championship
	Teams: Coloni Racing
Soviet Formula 3 Championship	Toomas Napa	1984 Soviet Formula 3 Championship
Swiss Formula Three Championship	Jo Zeller	1984 Swiss Formula Three Championship
Formula Renault
French Formula Renault Championship	Yannick Dalmas	1984 French Formula Renault Championship
Formula Renault Argentina	Néstor Gurini	1984 Formula Renault Argentina
Formula Ford
Australian Formula Ford Championship	Ron Barnacle	1984 Formula Ford Driver to Europe Series
Brazilian Formula Ford Championship	Carlos Silveira	1984 Brazilian Formula Ford Championship
British Formula Ford Championship	Dave Coyne	1984 British Formula Ford Championship
British Formula Ford 2000 Championship	Maurizio Sandro Sala
Danish Formula Ford Championship	Steen Hinge
Dutch Formula Ford 1600 Championship	Maartin Bottelier	1984 Dutch Formula Ford 1600 Championship
EFDA Formula Ford 2000 Championship	Maurício Gugelmin
European Formula Ford Championship	Hans Furrer	1984 European Formula Ford Championship
Finnish Formula Ford Championship	Jari Haavisto
German Formula Ford Championship	Uwe Schäfer	1984 German Formula Ford Championship
New Zealand Formula Ford Championship	Steven Richards	1983–84 New Zealand Formula Ford Championship
Swedish Formula Ford Championship	Leif Lindström	1984 Swedish Formula Ford Championship

Series	Driver	Season article
World Rally Championship	Stig Blomqvist	1984 World Rally Championship
	Co-Drivers: Björn Cederberg
	Manufacturer: Audi
African Rally Championship	David Horsey	1984 African Rally Championship
Australian Rally Championship	David Officer	1984 Australian Rally Championship
	Co-Drivers: Kate Officer
British Rally Championship	Jimmy McRae	1984 British Rally Championship
	Co-Drivers: Mike Nicholson
Canadian Rally Championship	Tim Bendle	1984 Canadian Rally Championship
	Co-Drivers: Mary Crundwell
Deutsche Rallye Meisterschaft	Harald Demuth
Estonian Rally Championship	Enn Jõemägi	1984 Estonian Rally Championship
	Co-Drivers: Tiit Sepp
European Rally Championship	Carlo Capone	1984 European Rally Championship
	Co-Drivers: Sergio Cresto
Finnish Rally Championship	Group 1: Mika Arpiainen	1984 Finnish Rally Championship
	Group 2: Kyösti Hämäläinen
	Group 4: Antero Laine
French Rally Championship	Jean Ragnotti
Hungarian Rally Championship	János Hideg
	Co-Drivers: Attila Bán
Italian Rally Championship	Paolo Fabrizio Fabbri
	Co-Drivers: Paolo Cecchini
	Manufacturers: Fiat
	Open: Adartico Vudafieri
	Open Co-Drivers: Luigi Pirollo
	Open Manufacturers: Lancia
Middle East Rally Championship	Saeed Al-Hajri	1984 Middle East Rally Championship
New Zealand Rally Championship	Tony Teesdale	1984 New Zealand Rally Championship
Polish Rally Championship	Andrzej Koper
Romanian Rally Championship	Ștefan Vasile
Scottish Rally Championship	Ken Wood
	Co-Drivers: Peter Brown
South African National Rally Championship	Sarel van der Merwe
	Co-Drivers: Franz Boshoff
	Manufacturers: Nissan
Spanish Rally Championship	Antonio Zanini
	Co-Drivers: Josep Autet

Series	Driver	Season article
FIA European Rallycross Championship	Div 1: Anders Norstedt	1984 European Rallycross Championship
	Div 2: Martin Schanche
British Rallycross Championship	John Welch

Series	Driver	Season article
World Sportscar Championship	C1: Stefan Bellof	1984 World Sportscar Championship
	Constructors C1: Porsche
	Constructors C2: Alba-Giannini
	Constructors B: BMW
IMSA GT Championship	GTP: Randy Lanier	1984 IMSA GT Championship
	GTO: Roger Mandeville
	GTU: Jack Baldwin
All Japan Endurance Championship	Naoki Nagasaka	1984 All Japan Endurance Championship
	Manufacturers: Lotec-BMW
Australian GT Championship	Allan Grice	1984 Australian GT Championship
Australian Sports Car Championship	Bap Romano	1984 Australian Sports Car Championship
Can-Am	Michael Roe	1984 Can-Am season
	Under 2 Litre: Kim Campbell

Series	Driver	Season article
NASCAR Winston Cup Series	Terry Labonte	1984 NASCAR Winston Cup Series
	Manufacturers: Chevrolet
NASCAR Busch Grand National Series	Sam Ard	1984 NASCAR Busch Grand National Series
	Manufacturers: Pontiac
NASCAR Winston West Series	Jim Robinson	1984 NASCAR Winston West Series
ARCA Racing Series	Bob Dotter	1984 ARCA Racing Series
Turismo Carretera	Roberto Mouras	1984 Turismo Carretera
USAC Stock Car National Championship	David Goldsberry	1984 USAC Stock Car National Championship

Series	Driver	Season article
European Touring Car Championship	Tom Walkinshaw
Australian Touring Car Championship	Dick Johnson	1984 Australian Touring Car Championship
Australian Endurance Championship	Allan Moffat	1984 Australian Endurance Championship
Australian Super Series	Peter Fitzgerald	1984 Australian Super Series
British Saloon Car Championship	Andy Rouse	1984 British Saloon Car Championship
Campeonato Brasileiro de Marcas e Pilotos	Jayme Figueiredo Xandy Negrão	1984 Campeonato Brasileiro de Marcas e Pilotos
Coupe d'Europe Renault 5 Alpine	Jan Lammers	1984 Coupe d'Europe Renault 5 Alpine
	Teams: Renault Nederland
Deutsche Rennsport Meisterschaft	Stefan Bellof	1984 Deutsche Rennsport Meisterschaft
Deutschen Produktionswagen Meisterschaft	Volker Strycek	1984 Deutschen Produktionswagen Meisterschaft
French Supertouring Championship	Dany Snobeck
New Zealand Touring Car Championship	Gary Sprague
AMSCAR Series	Steve Masterton
Stock Car Brasil	Paulo Gomes	1984 Stock Car Brasil season
TC2000 Championship	Mario Gayraud	1984 TC2000 Championship

• List of motorsport championships
• Auto racing