| 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 |