The HP Byron Nelson Championship is a golf tournament on the PGA Tour. The tournament is held in May at the Four Seasons Resort and Club Dallas at Las Colinas in Irving, Texas, U.S. It is one of two PGA tournaments held in the Dallas-Fort Worth Metroplex – the only metropolitan area to host two PGA tournaments. The tournament is the leading fundraiser for charity on the PGA Tour and has raised more than $121 million. For much of its history, it was the only PGA Tour stop named after a professional golfer; it remains one of only two such events, along with the Arnold Palmer Invitational. Nelson commonly made an appearance during the tournament. It is organized by the Salesmanship Club of Dallas.
For the tournament's first several decades, it was played at a variety of courses in Dallas. Byron Nelson was the tournament's first winner in 1944, when it was played at Lakewood Country Club. The following year it was played at Dallas Country Club, and then in 1946 moved to Brook Hollow Golf Club. For the better part of the next decade the event was not contested, until two iterations of it were held in 1956, both at Preston Hollow Country Club.