Jay McCarrol is a Canadian musician, writer and actor, most noted as co-creator and co-star with Matt Johnson of Nirvanna the Band the Show.

He is a three-time Canadian Screen Award nominee for his musical work, receiving nods for Best Original Music for a Program at the 1st Canadian Screen Awards in 2013 for I, Martin Short, Goes Home and at the 4th Canadian Screen Awards in 2016 for The Second City Project, and for Best Original Score at the 9th Canadian Screen Awards in 2021 for The Kid Detective.

As a writer he has received two CSA nominations for Best Writing in a Comedy Program or Series for Nirvanna the Band the Show, at the 6th Canadian Screen Awards in 2018 and at the 7th Canadian Screen Awards in 2019.

His other credits have included Johnson's theatrical films The Dirties, Operation Avalanche and BlackBerry.

He is a member of the synth-pop band Brave Shores, along with his sister, Stefanie.