Tony Geary was born in Coalville, Utah, a small mountain community of 800, where he was a gifted student. He attended the University of Utah as a Presidential Award Scholar in theater, and it was there that he was discovered by Jack Albertson, who cast him in "The Subject Was Roses". The production toured Hawaii and eventually settled at the Huntington Hartford Theater in Los Angeles, where Geary decided to establish himself.
Geary's subsequent musical theater credits include a wide range of classics, with a highlight being his co-starring engagement with Sid Caesar and Imogene Coca at the Frontier Hotel in Las Vegas in "Your Show of Shows". He has performed in over 50 stage productions throughout the United States, including roles in productions of "The Wild Duck", "The Inspector General", "The Cat's Paw", "The Glass Menagerie", and "Barabbas" at the Los Angeles Theater Center.
Geary has also toured with a production of "Jesus Christ Superstar", playing the title role, and portrayed Octavius Caesar opposite Lynn Redgrave and Timothy Dalton in a production of Shakespeare's "Antony and Cleopatra" for PBS and the BBC.