Constance Hess Williams (born June 27, 1944) is an American politician who served as a Democratic member of the Pennsylvania State Senate for the 17th District, from 2001 to 2009.

[4] Her father was the founder of the Hess Corporation and the owner of the New York Jets; her mother was the daughter of David T. Wilentz, who served as New Jersey Attorney General (1934–1944) and successfully prosecuted Bruno Hauptmann in the Lindbergh kidnapping trial, and the niece of Robert Wilentz, who served as Chief Justice of the New Jersey Supreme Court (1979–1996).

[7] In the general election, she faced freshman Republican incumbent Colleen Sheehan, whose opposition to abortion and support of school vouchers were seen as too conservative for the district.

[10] During her tenure in the House, Williams founded and co-chaired the Children's Caucus, and introduced legislation to give businesses tax credits for donating services or equipment to libraries.

[15] In 2001, longtime Republican incumbent Richard Tilghman resigned from the Pennsylvania State Senate, where he had represented the 17th District for thirty-two years.

Williams subsequently ran in the special election to fill the remainder of Tilghman's term, facing fellow State Representative Lita Indzel Cohen.

In 2004, she won re-election to a full term after defeating Republican Ted Barry, a Montgomery County assistant district attorney, by 64%–35%.