Margaret "Peggy" R. Rotundo (born July 16, 1949) is an American politician from Maine.
In 2006 she was named Senate Chair of the Maine Joint Committee on Appropriations and Financial Affairs.
Supporters have regularly praised Rotundo for her commitment to bipartisanship and her advocacy for Maine people, particularly veterans, children, the elderly, immigrants and working mothers.
Rotundo was born in Schenectady, New York and graduated from Mount Holyoke College in 1971.
Rotundo had previously worked from 1976 to 1978 as development director at the Abington Friends School in Pennsylvania.