Arnold Daniel Palmer (born September 10, 1929) is an American golfer who is generally regarded as one of the greatest players in the history of men's professional golf. He has won numerous events on both the PGA Tour and Champions Tour, dating back to 1955. Nicknamed "The King," he is one of golf's most popular stars and its most important trailblazer because he was the first star of the sport's television age, which began in the 1950s. He was part of golf's "Big Three" along with Jack Nicklaus and Gary Player who are widely credited with popularizing the sport around the world.

Palmer won the PGA Tour Lifetime Achievement Award in 1998, and in 1974 was inducted into the World Golf Hall of Fame.

Palmer was born in Latrobe, Pennsylvania. He learned golf from his father Deacon Palmer, who was head professional and greenkeeper at Latrobe Country Club, allowing young Arnold to accompany his father as he maintained the course. At age seven, Palmer broke 70 at Bent Creek Country Club. As a youngster, Palmer was only allowed on the Latrobe course (it was just nine holes then) in early morning or late afternoon, when the members weren't playing. He attended Wake Forest University, on a golf scholarship. He left upon the death of close friend Bud Worsham, and enlisted in the Coast Guard, where he served for three years and had some time to continue to hone his golf skills. Palmer gathered himself, and returned to competitive golf. His win in the 1954 U.S. Amateur Championship made him decide to try the pro tour for a while, and he and new bride Winifred Walzer (whom he had met at a Pennsylvania tournament) traveled the circuit for 1955. Palmer won the 1955 Canadian Open in his rookie season, and raised his game systematically for the next several seasons. With the help of his unfailing personality and lucrative business ventures, Arnold Palmer has almost single-handedly brought golf out of the elite country clubs and into the consciousness of mainstream America.