Joseph Kaiser is a Canadian operatic tenor. In 2005, he won second prize in Plácido Domingo's Operalia International Opera Competition while competing as a baritone. The judges were keen to his talents and potential as a tenor, and proposed that he make the switch to tenor. He has performed as a soloist with the New York Metropolitan Opera, making his debut in 2007.
In 2006, he played the role of Tamino in Kenneth Branagh's English-language film version of The Magic Flute. The film has been released in Europe, but not in the U.S.
Kaiser was also an anthem singer at the Bell Centre in Montreal.