Lydia Ko

Lydia Ko MNZM (born 24 April 1997) is a New Zealand professional golfer. She first reached number one in the Women's World Golf Rankings on 2 February 2015 at 17 years, 9 months and 9 days of age, making her the youngest player, either male or female, to be ranked No. 1 in professional golf.

Ko had much success from an early age holding many youngest accolades on the LPGA Tour. Until 2017, she is the youngest ever (age 15) to win an LPGA Tour event. In August 2013, she became the only amateur to win two LPGA Tour events. Upon winning The Evian Championship in France on 13 September 2015, she became the youngest woman, at age 18 years, 4 months and 20 days, to win a major championship. Her closing round of 63 was a record lowest final round in the history of women's golf majors, but she lowered that record with a 62 at the 2021 ANA Inspiration. She had previously won the ANA Inspiration on 3 April 2016 for her second consecutive major championship, where she also became the youngest player to win two women's major championships.

In 2014, Ko was named as one of Time magazine's 100 most influential people. In both 2014 and 2015, Ko was named in the EspnW Impact25 list of 25 athletes and influencers who have made the greatest impact for women in sports.

In 2016, Ko was named Young New Zealander of the Year, and in the 2019 New Year Honours, she was appointed a Member of the New Zealand Order of Merit for services to golf.

In November 2022, Ko won the CME Group Tour Championship with its $2 million first-place prize, completing the LPGA Tour season with three wins, the LPGA Player of the Year award for the second time in her career, the Vare Trophy for the lowest scoring average, the 2022 leading money winner, and rose to number two in the Women's World Golf Rankings.

Ko is a player director on the LPGA Board.