Daley Thompson's Decathlon is an Olympic-themed sports video game developed and released by Ocean Software in 1984.

[3] It was released in the wake of Daley Thompson's popularity following his gold medals in the decathlon at the 1980 and 1984 Olympic Games.

The player takes part in the ten events of the modern decathlon: The player starts the game with three lives; failure to reach the minimum standard in an event results in the loss of one life.

The Spectrum version was the first game to use Speedlock, a fast loader on the computer.

Daley Thompson's Decathlon was the ninth best-selling computer game of 1985 in the United Kingdom.