The following is an overview of the events of 2015 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 | 
|---|---|---|
| 4–17 January | 37th Dakar Rally | [1] | 
| 24–25 January | 53rd 24 Hours of Daytona | [2] | 
| 22 February | 57th Daytona 500 | [3] | 
| 16–17 May | 43rd 24 Hours of Nürburgring | [4] | 
| 24 May | 73rd Monaco Grand Prix | [5] | 
| 99th Indianapolis 500 | [6] | |
| 6–12 June | 97th Isle of Man TT | [7] | 
| 13–14 June | 83rd 24 Hours of Le Mans | [8] | 
| 25–26 July | 67th 24 Hours of Spa | [9] | 
| 26 July | 38th Suzuka 8 Hours | [10] | 
| 20 September | 25th Masters of Formula 3 | [11] | 
| 11 October | 58th Supercheap Auto Bathurst 1000 | [12] | 
| 20–21 November | 27th Race of Champions | [13] | 
| 22 November | 62nd Macau Grand Prix | [14] | 
| Last race | Championship | Ref | 
|---|---|---|
| 11 October | Formula Renault 2.0 Alps | [15] | 
| Date | Month | Name | Age | Nationality | Occupation | Note | Ref | 
|---|---|---|---|---|---|---|---|
| 5 | January | Jean-Pierre Beltoise | 77 | French | Racing driver | 1972 Monaco Grand Prix winner. | [16] | 
| 1 | May | Geoff Duke | 92 | British | Motorcycle racer | 500cc Grand Prix motorcycle racing World champion (1951, 1953-1955). | [17] | 
| 1 | July | Robert La Caze | 98 | Moroccan | Racing driver | The first Moroccan Formula One driver. | [18] | 
| 17 | Jules Bianchi | 25 | French | Racing driver | 2009 Formula 3 Euro Series champion and the most recent driver to be fatally injured during a Formula One Grand Prix. | [19] | |
| 14 | September | Bill Golden | 81 | American | Drag racer | Driver of the Little Red Wagon A/FX pickup | [20] | 
| 6 | December | Mike Mangold | 60 | American | Air racer | Red Bull Air World Race champion (2005, 2007). | [21] |