Roelof (Roel) Kuiper is a Dutch historian, philosopher, ideologue, politician and university professor. He was from 2007 to 2019 a member of the Dutch Senate, and is professor of Reformational philosophy at the Erasmus Universiteit Rotterdam in the name of the Association for Reformational philosophy, teaching Society Issues at the Christelijke Hogeschool Ede and Gereformeerde Hogeschool Zwolle and Political and social philosophy at the Vrije Universiteit Amsterdam (VU).

The Christian Union is a Christian-democratic political party in the Netherlands. The CU is a centrist party, maintaining more progressive stances on economic, immigration and environmental issues while holding more socially conservative positions on issues such as abortion and euthanasia. The party describes itself as "social Christian".