Luis Gerardo Gagne (born 27 August 1997) is a Costa Rican professional golfer who is best known for finishing low amateur at the 2018 U.S. Open at Shinnecock Hills.

[8] One of Gagne's earliest golf memories was, at five years of age, watching Tiger Woods play in the Arnold Palmer Invitational at Bay Hill Club, Florida.

In March 2021, Gaine won the PGA Tour Canada Qualifying School wire-to-wire at Mission Inn Club and Resort, Florida, with a 3-shot-margin in a 106-man-field, securing his card for the entire season.

In November 2021, he earned exempt status on the 2022 Korn Ferry Tour at the final stage qualifying tournament at the Landings Club in Savannah, Georgia.

He played 22 tournaments on the 2022 Korn Ferry Tour, making the cut in ten, with a best finish of tied 21st and ended the season ranked 124th.