The following is an overview of the events of 1945 in motorsport including the major racing events, motorsport venues that were opened and closed during a year, championships and non-championship events that were established and disestablished in a year, and births and deaths of racing drivers and other motorsport people.
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 1 | January | Jacky Ickx | Belgian | Racing driver | 24 Hours of Le Mans winner (-, -). World Endurance champion (1982-1983). | [1] |
| 2 | April | Guy Fréquelin | French | Rally driver | 1981 Rally Argentina winner. | [2] |
| 13 | Raffaele Pinto | Italian | Rally driver | 1974 Rally Portugal winner. | [3] | |
| 19 | June | "Flash Gordon" Mineo | American | Drag racer | [4] | |
| 26 | July | Antonio Fassina | Italian | Rally driver | 1979 Rallye Sanremo winner. | [5] |
| 12 | September | Russell "Jungle Jim" Liberman | Drag racer | [6] | ||
| 16 | September | Pentti Airikkala | Finnish | Rally driver | 1989 Lombard RAC Rally winner. | [7] |
| 16 | Kyösti Hämäläinen | Finnish | Rally driver | 1977 Rally Finland winner. | [8] |