Aaron Asher Barrett (born August 30, 1974) is the lead singer, lead guitarist, and primary songwriter for the band Reel Big Fish. Prior to forming with Reel Big Fish, Barrett played trombone in another ska-punk act, The Scholars, along with future Reel Big Fish bandmates Scott Klopfenstein and Grant Barry. More recently he formed The Forces of Evil with former members of Jeffries Fan Club, The Scholars and Lone Raspberry. The Forces of Evil sounded similar to Barrett's main band, although lyrically they were much more pessimistic. The Forces Of Evil ceased touring and playing in early 2005, although several members have gone on to play with Reel Big Fish.

Barrett is also featured in Serious Awesomeness, a DVD by The Aquabats, interviewing attendees of an Aquabats show outside of The Glass House in Pomona, California, calling himself "Joe Famous" and is also seen briefly on stage with the band. He made a cameo appearance in the music video for "Come Back Home" by Suburban Legends in an Elvis costume and a cameo appearance in the music video for "I'm OK, You're OK" by MxPx as a doughnut shop employee. Aaron has been dubbed as "The sexiest man of ska in 2009".