Daniel James Macdonnell Heap (September 24, 1925 – April 25, 2014) was a Canadian activist and politician. Heap served as a Member of Parliament with the New Democratic Party, a Toronto City Councillor, a political activist and an Anglican worker-priest. He represented the Toronto, Ontario, riding of Spadina (after 1988 Trinity—Spadina) from 1981 to 1993 and Ward 6 on Toronto City Council from 1972 to 1981. As an activist he was involved in the peace movement, community issues around housing, homelessness, poverty and refugee rights among other social justice issues.