The following is an overview of the events of 1925 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 |
|---|---|---|
| 3 May | 16th Targa Florio | [1] |
| 30 May | 12th Indianapolis 500 | [2] |
| 20–21 June | 3rd 24 Hours of Le Mans | [3] |
| 18–22 June | 14th Isle of Man TT | [4] |
| 11–12 July | 2nd 24 Hours of Spa | [5] |
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 14 | May | Ninian Sanderson | British | Racing driver | 24 Hours of Le Mans winner (1956). | [6] |
| 14 | June | Jean-Louis Rosier | French | Racing driver | Winner of the 24 Hours of Le Mans (1950) | [7] |