Sillanpää (meaning "bridge's end") is a Finnish surname. Notable people with the surname include:
Miina Sillanpää (1866–1952), Finnish politician, first female Finnish minister Rosa Sillanpää (1888–1929), Finnish trade union activist and politician Frans Eemil Sillanpää (1888–1964), Finnish writer Jari Sillanpää (born 1965), Finnish singer Sanna Sillanpää (born 1968), killed three men and wounded another in the Albertinkatu shootings
Other meanings 1446 Sillanpää, asteroid named after Frans Emil Sillanpää