The 1980 World's Strongest Man was the fourth edition of World's Strongest Man and was won by Bill Kazmaier from the United States.

Defending champion Don Reinhoudt was forced to retire from the competition due to injury in his final World's Strongest Man.

[1] There were a total of 10 different events used in the competition: The American Bill Kazmaier dominated the competition by winning 6 events, getting two second places, one third and one fourth place: He tied for first in the Log lift, together with Lars Hedlund.

He won the engine race, the steel bar bend, the Girl Squat lift, the Silver Dollar Deadlift and the final tug of war.

He took third in the battery hold and got fourth in the truck pull.