Mary Gay Scanlon (born August 30, 1959) is an American attorney and politician.
She is a member of the United States House of Representatives, representing Pennsylvania's 5th congressional district, since being sworn into office on January 3, 2019.
She was sworn in as the member representing Pennsylvania's 7th congressional district on November 13, 2018.
She was elected to both positions on November 6, 2018, in a special election to fill the vacancy in the 7th district created by the resignation of Representative Pat Meehan and in the regular election to a two-year term of a member for the 5th district.