Men's freestyle 55 kilograms competition at the 2008 Summer Olympics in Beijing, China, was held on August 19 at the China Agricultural University Gymnasium.

This freestyle wrestling competition consisted of a single-elimination tournament, with a repechage used to determine the winners of two bronze medals.

Each wrestler who lost to one of the two finalists moved into the repechage, culminating in a pair of bronze medal matches featuring the semifinal losers each facing the remaining repechage opponent from their half of the bracket.

Each bout consisted of up to three rounds, lasting two minutes apiece.

Gold medal-winner Henry Cejudo would later leave the sport of wrestling to become a successful mixed martial artist in the UFC, simultaneously holding the world flyweight and bantamweight titles.