The following is an overview of the events of1923 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 relatedseason articles.
| Date | Event | Ref |
|---|---|---|
| 15 April | 14th Targa Florio | [1] |
| 26–27 May | 1st 24 Hours of Le Mans | [2] |
| 30 May | 11th Indianapolis 500 | [3] |
| 13–16 June | 12th Isle of Man TT | [4] |
| Date | Month | Name | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|
| 11 | January | Carroll Shelby | American | Automotive designer and racing driver | 24 Hours of Le Mans winner (1959). | [5] |
| 29 | March | Geoff Duke | British | Motorcycle racer | 500ccGrand Prix motorcycle racing World champion (1951,1953-1955). | [6] |
| 6 | June | Ivor Bueb | British | Racing driver | 24 Hours of Le Mans winner (1955,1957). | [7] |
| 16 | Ron Flockhart | British | Racing driver | 24 Hours of Le Mans winner (1956,1957). | [8] |
| Date | Month | Name | Age | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|---|
| 4 | September | Howdy Wilcox | 34 | American | Racing driver | Indianapolis 500 winner (1919). | [9] |
