Jonkheer Dirk Jan de Geer (14 December 1870 – 28 November 1960) was a Dutch nobleman, lawyer, conservative statesman and prime minister of the Netherlands (1926–1929, 1939–1940). He was disgraced for advocating a peace settlement between the Kingdom and Nazi Germany in 1940. Born in Groningen, he was a descendant of the De Geer family painted by Rembrandt. After receiving his doctorate in law in 1895, De Geer worked as a journalist and acted as town councillor of Rotterdam (1901–1907).