Jón Páll was invited to the World's Strongest Man competition for the first time in 1983, in which he came in second only to Geoff Capes. The following year, at age 24, he defeated Capes and secured the title. During the final armwrestling event, in which Jón Páll was up against him, Capes appeared to be winning, pulling Jón Páll's arm down convincingly, but sustained a muscle tear in his forearm as Jón Páll started to thrust his arm back. Right after winning the bout, Jón Páll shouted "The King has lost his crown!" and won his first World's Strongest Man title in 1984. Although Jón Páll was closely defeated by Capes at the 1985 World's Strongest Man, he managed to regain the title in 1986. During the deadlift event at the 1985 World's Strongest Man competition, someone in the audience called him an Eskimo. Jón Páll shouted back: "I am not an Eskimo. I am a Viking!" and successfully lifted the cart.