The following is an overview of the events of 1948 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.
The calendar includes only annual major non-championship events or annual events that had own significance separate from the championship. For the dates of the championship events see related season articles.
| Date | Event | Ref |
|---|---|---|
| 4 April | 32nd Targa Florio | [1] |
| 1–2 May | 15th Mille Miglia | [2] |
| 16 May | 10th Monaco Grand Prix | [3] |
| 31 May | 32nd Indianapolis 500 | [4] |
| 9–13 June | 30th Isle of Man TT | [5] |
| 10–11 July | 13th 24 Hours of Spa | [6] |
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 4 | May | Hurley Haywood | American | Racing driver | 24 Hours of Le Mans winner (1977, 1983, 1994). | [7] |
| 1 | June | Tom Sneva | American | Racing driver | Indianapolis 500 winner (1983). | [8] |
| 20 | November | Gunnar Nilsson | Swedish | Racing driver | 1977 Belgian Grand Prix winner. | [9] |
| 6 | December | Keke Rosberg | Finnish | Racing driver | Formula One World Champion (1982). | [10] |
| Date | Month | Name | Age | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|---|
| 27 | July | Woolf Barnato | 52 | British | Racing driver | 24 Hours of Le Mans winner (1928-1930). | [11] |
