List of mayors of Toronto

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Below is a list of mayors of Toronto, Ontario, Canada.

Toronto's first mayor, William Lyon Mackenzie, was appointed in 1834 after his Reform coalition won the new City of Toronto's first election and he was chosen by the Reformers. The most recent election to the office of mayor was a by-election on June 26, 2023 in which Olivia Chow was elected. Chow formally took office on July 12, 2023.

If a vacancy occurs, the City of Toronto Act explicitly states that the deputy mayor of Toronto assumes certain limited mayoral powers, but remains deputy mayor during a vacancy. They do not become an acting or interim mayor.