Barbara M. Leonard (née Martin; June 12, 1924 – January 24, 2013) was an American Republican politician. She was born in Newport in 1924. She was a candidate for the United States Senate in 1984 as a Republican, but lost to incumbent Claiborne Pell. She served as the Secretary of State of Rhode Island from 1993-95 as a Republican. Leonard served on several state boards and commissions, including the Rhode Island Economic Development Corporation, the state's Port Authority and the state Advisory Committee on Refugee Resettlement.