Theresa Kavanagh (born October 10, 1957) is a Canadian politician. She was elected to Ottawa City Council representing Bay Ward in the 2018 Ottawa municipal election. Kavanagh is the daughter of immigrants, having an Irish father and British mother. Her father was a steelworker at Stelco. She grew up in Hamilton, Ontario. She received a fine arts degree at the University of Guelph. In her youth, she joined Canada World Youth. Kavanagh worked for a number of New Democratic Party Members of Parliament and worked for 21 years in the party's whip's office.