The following is an overview of the events of 1920 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 |
|---|---|---|
| 31 May | 8th Indianapolis 500 | [1] |
| 15–16 June | 9th Isle of Man TT | [2] |
| 24 October | 11th Targa Florio | [3] |
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 3 | February | Tony Gaze | Australian | Racing driver | The first Australian Formula One driver. | [4] |
| 30 | April | Duncan Hamilton | British | Racing driver | 24 Hours of Le Mans winner (1953). | [5] |
| Date | Month | Name | Age | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|---|
| 25 | November | Gaston Chevrolet | 28 | American | Racing driver | Indianapolis 500 winner (1920). | [6] |
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