The men's decathlon competition at the 2016 Summer Olympics in Rio de Janeiro, Brazil.

[1] The medals were presented by Dagmawit Girmay Berhane, IOC member, Ethiopia and Bernard Amsalem, Council Member of the IAAF.

The decathlon consists of ten track and field events, with a points system that awards higher scores for better results in each of the ten components.

[3] Note: Eelco Sintnicolaas of the Netherlands did not compete.

[5] Note: Leonid Andreev of Uzbekistan, Rico Freimuth of Germany, and Willem Coertzen of South Africa did not compete.