Patrick Duncan

Patrick Duncan may refer to:


 * Sir Patrick Duncan (South African politician) (1870–1943), Governor-General of South Africa
 * Patrick Sheane Duncan (born 1947), American writer, film producer and director
 * Paddy Duncan (1894–1949), Irish footballer
 * Patrick Duncan (anti-apartheid activist) (1918–1967)
 * Pat Duncan (baseball) (1893–1960), baseball player
 * Pat Duncan (born 1960), Canadian Liberal politician