The following is an overview of the events of 1934 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 |
|---|---|---|
| 2 April | 6th Monaco Grand Prix | [1] |
| 8–9 April | 8th Mille Miglia | [2] |
| 20 May | 25th Targa Florio | [3] |
| 30 May | 22nd Indianapolis 500 | [4] |
| 11–15 June | 23rd Isle of Man TT | [5] |
| 16–17 June | 12th 24 Hours of Le Mans | [6] |
| 8 July | 10 Hours of Spa | [7] |
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 11 | February | John Surtees | British | Racing driver | Grand Prix motorcycle racing champion (1956, 1958, 1959, 1960). Formula One World Champion (1964). | [8] |
| 20 | Bobby Unser | American | Racing driver | Indianapolis 500 winner (1968, 1975, 1981). | [9] | |
| 10 | November | Lucien Bianchi | Belgian | Racing driver | 24 Hours of Le Mans winner (1968). | [10] |
| 25 | December | Giancarlo Baghetti | Italian | Racing driver | 1961 French Grand Prix winner. | [11] |
