Sergio García Fernández (pronounced [ˈseɾxjo ɣaɾˈθi.a feɾˈnandeθ]; born 9 January 1980) is a Spanish professional golfer. He turned professional in 1999 and played on the European Tour and PGA Tour prior to joining LIV Golf in 2022. García has won 36 international tournaments as a professional, most notably the 2008 Players Championship and the 2017 Masters Tournament. García was also the Chairman of Spanish football team CF Borriol.

García has spent much of his career in the top 10 of the Official World Golf Ranking, including over 300 weeks in the top 10 between 2000 and 2009, and over 450 weeks in the top 10 in total. He reached his highest career ranking, second, after winning the HSBC Champions tournament in November 2008. García has achieved career earnings of more than US$43 million. As a player, he is noted for strong iron play and accuracy. In the Ryder Cup, he competed in ten of the eleven matches playing during his professional career cumulatively earning a record 28.5 points during those matches.

García began playing golf at the age of three and was taught by his father, Victor, who is a club professional. García won his club championship at age 12. Four years later, he set a record as the youngest player to make the cut at a European Tour event, the 1995 Turespaña Open Mediterrania. This record was broken by amateur Jason Hak in November 2008 at the UBS Hong Kong Open, beating García's record by 107 days. In 1995, García became the youngest player to win the European Amateur. He followed that with a win in the Boys Amateur Championship in 1997. He won a professional tournament, the 1997 Catalan Open, as an amateur.

Garcia was part of the Spanish teams winning the European Boys' Team Championship in 1996 and 1997. In 1998, he won The Amateur Championship at Muirfield and reached the semi-finals of the U.S. Amateur. He also finished second in the 1998 Argentine Open, being the low amateur, and winning the Pereira Iraola Cup.

García turned professional in 1999 after shooting the lowest amateur score in the 1999 Masters Tournament. His first title on the European Tour came in his sixth start as a professional, in July 1999 at the Irish Open. He first achieved worldwide prominence with a duel against Tiger Woods in the 1999 PGA Championship, where he eventually finished second, losing by one stroke. Late in the final round, García with his ball up against a tree trunk in the right rough on the 16th hole, and the green hidden from view, he swung hard with his eyes shut and hit a low curving fade that ran up onto the green. As the shot traveled, he sprinted madly into the fairway and then scissor-kick jumped to see the result. Shortly afterwards he became the youngest player ever to compete in the Ryder Cup. In 2002, during a practice round, García made an albatross (double eagle) on the par-5 second hole at the Masters, one of the few players to have ever done so. On the 575-yard (526 m) hole at the Augusta National Golf Club, he holed a 253-yard (231 m) 2-iron following a 325-yard (297 m) drive.^{[citation needed]}

When García first turned professional, he had an unorthodox swing with a circular loop and long large lag, and this method drew comparisons to Ben Hogan, one of the best players of all time. But during the 2003 season, he worked towards making his swing more conventional, but has largely kept his original method. In his early years, he repeatedly gripped, released, and regripped his hands on the club handle before finally taking a shot. This "waggle" habit created a stir, especially at the 2002 U.S. Open when some spectators shouted out, "Hit the ball, Sergio!", and some people audibly counted the number of regrips into the twenties. Since then he has eliminated the habit. Responding to criticism of his swing, he said, "My swing works for me, so why should I change it? I prefer to have a natural swing and play well rather than a perfect swing and not be able to play good."

At the age of 21, García won his first PGA Tour event at the 2001 MasterCard Colonial in Fort Worth, Texas, and then won again at the Buick Classic in New York the same year. He was the youngest Tour winner since Tiger Woods in 1996 at age 20. In 2002, García won the Mercedes Championships in early January, and in 2004, he won the EDS Byron Nelson Championship and the Buick Classic for the second time. His sixth PGA Tour victory came at the 2005 Booz Allen Classic. As of October 2020, he has eleven PGA Tour victories, including the 2017 Masters Tournament. He also plays a limited schedule on the European Tour, where he has 16 tour level victories to his name.

García has been a member of every European Ryder Cup team since 1999, with the exception of 2010 and 2023, and has a career record at the Ryder Cup of 25–13–7 (.633). He has been in six winning sides and his singles win in 2018 made him the all-time Ryder Cup points leader, with 251⁄2 points in 9 appearances, overtaking Nick Faldo's 25 points in 11 appearances. By winning three of his four matches at Whistling Straits in 2021, he extended this record to 281⁄2 points, and also surpassed Faldo as the player with the most individual match victories, with 25.