The following is an overview of the events of 1973 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 significance separate from the championship. For the dates of the championship events see related season articles.
| Date | Event | Ref |
|---|---|---|
| 3–4 February | 12th 24 Hours of Daytona | [1] |
| 18 February | 15th Daytona 500 | [2] |
| 6 May | 57th Targa Florio | [3] |
| 28–30 May | 57th Indianapolis 500 | [4] |
| 3 June | 31st Monaco Grand Prix | [5] |
| 4–8 June | 55th Isle of Man TT | [6] |
| 9–10 June | 41st 24 Hours of Le Mans | [7] |
| 23–24 June | 4th 24 Hours of Nurburgring | [8] |
| 21–22 July | 25th 24 Hours of Spa | [9] |
| 30 September | 14th Hardie-Ferodo 1000 | [10] |
| 18 November | 20th Macau Grand Prix | [11] |
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 14 | January | Giancarlo Fisichella | Italian | Racing driver | Winner of the 3 Formula One Grand Prix. | [12] |
| 27 | Yoshihide Muroya | Japanese | Air racer | Red Bull Air World Race champion (2017). | [13] | |
| 1 | March | Ryo Michigami | Japanese | Racing driver | All Japan GTC champion (2000). | [14] |
| 3 | Jason Bright | Australian | Racing driver | 1998 FAI 1000 winner. | [15] | |
| 19 | May | Dario Franchitti | British | Racing driver | Indianapolis 500 winner (2007, 2010, 2012). | [16] |
| 4 | July | Jan Magnussen | Danish | Racing driver | Danish Touringcar champion (2003, 2008). | [17] |
| 25 | Kenny Roberts Jr. | American | Motorcycle racer | 500cc Grand Prix motorcycle racing World champion (2000). | [18] | |
| 20 | November | Neil Hodgson | British | Motorcycle racer | Superbike World champion (2003). | [19] |
| 1 | December | Andrea Bertolini | Italian | Racing driver | Champion of the FIA GT Championship in 2006, 2008-2009 and FIA GT1 World Championship in 2010. | [20] |
| Date | Month | Name | Age | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|---|
| 30 | March | Yves Giraud-Cabantous | 68 | French | Racing driver | One of the first French Formula One drivers. | [21] |
| 5 | April | David Murray | 63 | British | Racing driver | One of the first British Formula One drivers. | [22] |
| 15 | Ernst Klodwig | 69 | German | Racing driver | The first East German Formula One driver. | [23] | |
| 6 | October | François Cevert | 29 | French | Racing driver | 1971 United States Grand Prix winner. | [24] |