The Men's 49er was a sailing event on the Sailing at the 2016 Summer Olympics program in Rio de Janeiro and took place between 12–18 August at Marina da Glória.

13 races (the last one a medal race) were held.

The medals were presented by Barbara Kendall, IOC member, New Zealand and Adrienne Greenwood, Vice President of World Sailing.

Scoring system: low-point system; Legend:   – Qualified for medal race(s); DNF – Did not finish; DSQ – Disqualified; RDG – Redress given; † – Discarded race not counted in the overall result;