Dirk Jan de Geer, Dutch lawyer and politician, Prime Minister of the Netherlands (b. 1870)

Jonkheer Dirk Jan de Geer (14 December 1870 – 28 November 1960) was a Dutch politician of the defunct Christian Historical Union (CHU) now merged into the Christian Democratic Appeal (CDA). He served as Prime Minister of the Netherlands from 8 March 1926 until 10 August 1929 and from 10 August 1939 until 3 September 1940.