Adam Kantor graduated from Northwestern University in 2008. Soon after college, he landed a starring role, portraying Mark in the closing cast of the Broadway musical Rent, with the last performance being made into a film, Rent: Filmed Live on Broadway. On Broadway, he has also appeared in the musical Next to Normal and the Broadway Revival of Fiddler on the Roof.

He starred in the 2013 Off-Broadway revival of the musical The Last Five Years. He has also appeared Off-Broadway in the musicals Avenue Q and Falling for Eve.

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