John Brzenk is a professional armwrestler from the United States, who is widely acknowledged as 'the greatest armwrestler of all time'. His grandfather immigrated to the US from Poland. During his career as a professional armwrestler, Brzenk has won more than 500 championship titles.

Arm wrestling is a sport with two opponents who face each other with their bent elbows placed on a table and hands firmly gripped, who then attempt to force the opponent's hand down to the table top. The sport is often casually used to demonstrate the stronger person between two or more people. Arm wrestling is an ancient sport that was revived in the 1950s in the United States. In September 1962, the first world wrestling championship was held in Petaluma, California, as this wrestling was called.