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 | Driver | Season article | |
|---|---|---|---|
| World Sportscar Championship | C1: Stefan Bellof | 1984 World Sportscar Championship season | |
| Constructors C1: Porsche C2:  Alba-GianniniB: BMW | |||
| IMSA GT Championship | GTP:  Randy Lanier | 1984 IMSA GT Championship season | |
| GTO: Roger Mandeville | |||
| GTU: Jack Baldwin | |||
| Australian GT Championship |  Allan Grice | 1984 Australian GT Championship season | |
| Australian Sports Car Championship | Bap Romano | 1984 Australian Sports Car Championship |
| Series | Driver | Season article |
|---|---|---|
| World Rally Championship |  Stig Blomqvist | 1984 World Rally Championship season |
| Manufacturer: Audi | ||
