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"Dragonfly" is a song by former Phish guitarist Trey Anastasio from his 2006 album Bar 17. It was released as the album's first single, with heavy airplay on Jam On on Sirius Satellite Radio and Dish Network.

Dragonfly is one of four tracks on the album that Anastasio recorded with former Phish bassist Mike Gordon and the Benevento-Russo Duo. The recording session led to the four performers to spend the summer of 2006 on a co-headlining tour with Phil Lesh and Friends.

Anastasio performed Dragonfly on the Late Show with David Letterman with his current solo project, Trey Anastasio Band.