Jan Rudolph Slotemaker de Bruïne (6 May 1869 – 1 May 1941) was a Dutch theologian and politician of the Christian Historical Union (CHU).

During his ministry in Haulerwijk, which lasted until May 1897, Slotemaker managed to reawaken interest in religion among the local impoverished population, and he quickly gained a reputation as a devoted minister and a gifted orator.

He expressed his support for a presbyterian polity in which each neighbourhood would have its own minister and church council, and sought to put this concept into practice during his ministry in Utrecht.

Slotemaker de Bruïne worked as a professor of Theology and the History of Christianity and at Utrecht University from March 1916 until April 1925.

After the 1933 general election Slotemaker de Bruïne was appointed again in the post as the newly renamed Minister of Social Affairs in the Colijn II cabinet, taking office on 8 June 1933.

After the 1937 general election Slotemaker de Bruïne returned as a Member of the House of Representatives, taking office on 8 June 1937.