Jhonattan Vegas (born 19 August 1984) is a Venezuelan professional golfer who plays on the PGA Tour.
Vegas represented Venezuela in the 2009 Omega Mission Hills World Cup with Alfredo Adrian. They finished tied for 12th place.
Vegas won his first Nationwide Tour event in 2010 at the Preferred Health Systems Wichita Open. He finished the season 7th on the money list and earned his 2011 PGA Tour card, the first Venezuelan to do so.
On 23 January 2011, Vegas won his first PGA Tour event, the Bob Hope Classic, after defeating Tour veteran Bill Haas and Gary Woodland in a sudden death playoff. It was Vegas' fifth overall start on the PGA Tour and the second as a member of the tour. The victory is the first by a Venezuelan at a PGA Tour event; Vegas earned entry into the Masters and a two-year exemption on the PGA Tour. In his next start he finished in a tie for 3rd at the Farmers Insurance Open, holding a share of the lead on the back nine and moved to a career OWGR high of 69th. Vegas was the first PGA Tour rookie to lead the FedEx Cup standings.
In July 2012, Vegas was the runner-up finisher at the annual Telus World Skins Game to Paul Casey held in Halifax, Nova Scotia, after having won the 2011 event in Banff, Alberta.
Vegas started 2013 with three missed cuts in three tournaments. He sat out the remainder of the 2013 season after shoulder surgery. Vegas attempted to regain his PGA Tour status through the Web.com Tour Finals, but fell short and started the 2013-14 season on a Medical Extension. He satisfied his medical extension with a T3 finish at the John Deere Classic.
Vegas finished the 2014–15 season 153rd in the FedEx Cup and outside the top 25 in the Web.com Tour Finals, limiting him to past champion status for the 2015–16 PGA Tour season, but making the best of his situation with two top tens in his first three starts.