Margaret H. "Peggy" Murphy (February 3, 1930 – December 13, 2016) was an American politician who served in the Maryland House of Delegates and was the first female African-American chairman of the Baltimore City Delegation.

Murphy was one of three delegates serving the 41st legislative district, which lies in the central, northwest section of Baltimore City.

Prior to the Maryland House of Delegates, Murphy was an elementary school teacher and taught in the Baltimore City Public Schools for 30 years.

She retired as aneducational associate, Office of English and Library Services for Baltimore City Public Schools.

She chaired the Baltimore City Delegation from 1989 to 1992 and also served on the Joint Committee on Administrative, Executive and Legislative Review.