Gary Stadler is an American New Age pianist, composer, songwriter and producer, specializing in contemporary Celtic-influenced themes and atmospheres. Stadler's six albums generally focus on imaginative concepts loosely based in Celtic mythology, especially stories of the realm of Faerie. His music combines melodic elements of rare world instruments, mastery of synthesizer orchestrations and studio techniques. Three of his albums feature collaborations with vocalists Singh Kaur, Stephannie and Wendy Rule.

Gary Stadler's third album, Fairy Heartmagic was listed on Billboard's New Age Top 25 chart for four weeks in year 2000. Several of his songs have been featured on compilations on multiple record labels in the USA and Europe.

Gary Stadler is the brother of professional golfer Craig Stadler.