Races in calendar week 20/2006
All motorsport events on the weekend of 19–21 May 2006.
| Circuit | Country | Series |
|---|---|---|
| Brands Hatch |  Great Britain |
|
| Campo Grande |  Brazil |
|
| Donington Park | Great Britain |
|
| Jarama |  Spain |
|
| Lexington |  USA |
|
| Monterrey (Fundidora Park) |  Mexico |
|
| Oschersleben |  Germany |
|
| Phillip Island |  Australia |
|