Sailing at the 2012 Summer Olympics – 49er

The men's 49er was a sailing event on the Sailing at the 2012 Summer Olympics program in Weymouth and Portland National Sailing Academy. Sixteen races (last one a medal race) were scheduled and completed. 40 sailors, on 20 boats, from 20 nations competed. Ten boats qualified for the medal race on course area Nothe in front of Weymouth, where each position scored double points.