The men's 80 kg competition in taekwondo at the 2000 Summer Olympics in Sydney took place on 29 September at the State Sports Centre.

[1] Cuban fighter Ángel Matos overcame his mother's death to defeat Germany's Faissal Ebnoutalib 3–1 for the gold medal in the men's welterweight class.

[2][3] Meanwhile, Mexico's Victor Estrada handily defeated Sweden's Roman Livaja in a tight match 2–1 to pick up the bronze.

[4] The main bracket consisted of a single elimination tournament, culminating in the gold medal match.

The taekwondo fighters eliminated in earlier rounds by the two finalists of the main bracket advanced directly to the repechage tournament.