Steven A. Baddour (born 1969) is an American attorney and politician from the Commonwealth of Massachusetts.

He is a member of the Democratic Party and a former member of the Massachusetts Senate representing the 1st Essex District, which encompasses Amesbury, Haverhill, Merrimac, Newburyport, North Andover, Salisbury, and his hometown of Methuen.

He also served as a member of the Joint Committees on Children & Families, Post Audit & Oversight, and Election Laws.

Locally, Steve is an active member of the Northeastern Legislative Caucus.

Baddour resigned from the Massachusetts Senate on April 2, 2012 to join McDermott, Will & Emery.