| Event: | Men's RS:X |
| Games: | 2012 Summer |
| Dates: | 31 July – 7 August |
| Competitors: | 38 |
| Nations: | 38 |
| Goldnoc: | NED |
| Silvernoc: | GBR |
| Bronzenoc: | POL |
| Next: | 2016 |
The men's RS:X was a sailing event on the Sailing at the 2012 Summer Olympics program in Weymouth and Portland National Sailing Academy. Eleven races (last one a medal race) were scheduled and completed. 38 sailors, on 38 boards, from 38 nations competed. Ten boards qualified for the medal race on course area Nothe in front of Weymouth, where each position scored double points. The gold medal was won by Dorian van Rijsselberghe who already after the ninth race had accumulated sufficient results to be certain to win the gold medal, as long as he competed in the races.
| bgcolor=LightBlue align=center | ● | Practice race | bgcolor=DodgerBlue align=center | ● | Race on Portland | bgcolor=Yellow align=center | ● | Race on Nothe | bgcolor=DarkGrey align=center | ● | Race on West | bgcolor=Gold align=center | ● | Medal race on Nothe |
See main article: Sailing courses at the 2012 Summer Olympics. For the RS:X course areas Portland, Nothe, and West were used. The location (50° 35.19’ N, 02° 26.54’ W) points to the center Portland course area, the location (50° 36.18’ N 02° 25.98’ W) points to the center of the Nothe course area and the location (50° 37.18’ N 02° 23.55’ W) points to the center of the West course area. The target time for the course was 30 minutes for the races and 20 minutes for the medal race. The race management could choose from many course configurations.