Gareth Isaac is a dynamic actor and music theatre performer who also runs his own vocal coaching studio.

Hailing from Gosford on the Central Coast of New South Wales, Gareth was a commonly seen face at his local musical society before he decided to make the main stage his home. In 2016, Gareth received a Bachelor of Music (Musical Theatre) from The Australian Institute of Music. During his time there, he appeared as the Voice of the Book in How To Succeed in Business Without Really Trying and as Clyde in The Witches of Eastwick. In 2021, Gareth received a Masters of Fine Arts (Voice) from NIDA. During his time at NIDA, Gareth served as a Voice and Dialect Assistant for Next To Normal (Dir. Darren Yap), and … And Tell Sad Stories of the Deaths of Queens (Dir. Liam McIlwain). He has since begun operating his own vocal coaching studio, Tune-Up Voice Coaching, where he specialises in speech, singing, and dialect coaching services.

Gareth has most recently been seen as Robertson Ay in Mary Poppins (Michael Cassel Group, Cameron Mackintosh), and The Narrator in Puffs: Or Seven Increasingly Eventful Years at a Certain School of Magic and Magic (TEG). Other credits include Eugene in The Original Grease, Featured Ensemble in Kiss Me, Kate (Squabbalogic), President 3/Waiter in Dear World (Neglected Musicals) Dull in Love’s Labours Lost (Melbourne Shakespeare Company), and Ensemble in Dreamsong (EbbFlow Theatre). He also wrote and produced his own musical cabaret, Odd Man Out, for the Sydney Fringe Festival 2017.

Gareth was also a semi-finalist in the Rob Guest Endowment Award (2018), and won Best Actor in a Play (Broadway World, 2019) for Puffs. Gareth has been a proud member of Actor’s Equity since 2015.