James William Walker (born January 16, 1979) is an American professional golfer who plays on the PGA Tour.

Born in Oklahoma City, Walker and his family later moved to Texas to the San Antonio area, and he graduated from Canyon High School in New Braunfels in 1997.

Walker only played in nine PGA Tour events in 2005 due to injury, making three cuts and a best finish of 17th at the MCI Heritage.

Walker fared better in 2009, where he recorded his first two top-10 finishes on the PGA Tour, including a T5 at the Turning Stone Resort Championship.

Walker started to develop a consistent game on the PGA Tour, evidenced when he made 25 consecutive cuts from the 2012 John Deere Classic to the 2013 Memorial Tournament.

[4] Five weeks later, in early February 2014, Walker won the AT&T Pebble Beach National Pro-Am by one stroke over Dustin Johnson and Jim Renner.

He had a six-stroke advantage going into the final round, but shot a two-over-par 74 on Sunday and needed to hole a five-foot par putt on the 18th for the victory.

The following week on tour, Walker defended his Sony Open in Hawaii title with a nine-stroke victory after a final round 63.

In March 2015, Walker earned his fifth PGA Tour win and second of the season at the Valero Texas Open with a four-stroke victory over Jordan Spieth.

For the season, Walker had two victories and two second-place finishes, putting him in the top-10 on the PGA Tour money list for the second year in a row.

After a washout on Saturday, Walker shot a third round 68 on Sunday morning, finishing with a birdie on the 18th hole to take the 54-hole lead by one stroke.

Walker, in his third shot, played a safe approach from the rough to the green, taking two putts to make par and maintain his 1-shot lead for his first major title.

[10] Walker ended the 2021–22 season 59th in earnings, but he moved up to 50th after the PGA Tour removed LIV Golf players from the rankings.