Patricia Kathryn "Pat" Piper (July 16, 1934 – January 31, 2016) was a Minnesota politician and member of the Minnesota Senate and the Minnesota House of Representatives. A member of the Minnesota Democratic–Farmer–Labor Party (DFL), she represented District 27 in the Senate and 31B in the House, which includes portions of Freeborn and Mower counties in southeastern Minnesota. She was a religious education director, ecumenical resource center/consultant/teacher and workshop leader.