Christian Union – Reformed Political Party (Dutch: ChristenUnie – Staatkundig Gereformeerde Partij) is the name for a parliamentary common list for the European Parliament formed by two Dutch orthodox Protestant parties: the Christian Union and the Reformed Political Party. Both parties are Eurosceptic and socially conservative, and each has candidates on the common list. The CU and SGP also regularly co-operate in municipal elections, often gaining above-average results in municipalities which form part of the Dutch Bible Belt.

The Reformed Political Alliance (GPV) and the Reformed Political Party (SGP) first tried to enter the European Parliament on their own in the 1979 European Parliament election. In 1984 they formed a common list together with the Reformed Political Party (RPF). The RPF-GPV-SGP parliamentary common list got its first seat in the 1984 European Parliament election.

In 2001, RPF and the GPV merged into the Christian Union. After this merger the common list was renamed to Christian Union-SGP. The 2004 European election was the first time it took part under this name.

In 2022, both parties decided to not compete as a list in future European Parliament elections.^[1]

• 1984 and 1989: The parties were not part of any group and thus part of Non-Inscrits.
• 1994: All parties were part of the first eurosceptic group in the European Parliament, Europe of Nations (EN), which dissolved in 1996 and succeeded by the Independents for a Europe of Nations (I-EN).
• 1999: The I-EN reorganised and renamed to Europe of Democracies and Diversities (EDD) group.
• 2004: The RPF and GPV merged into the Christian Union. The EDD group reorganised itself into a new Independence/Democracy (IND/DEM) group. Both the Christian Union and the Reformed Political Party were part of this.
• 2009: In June 2009, the IND/DEM group broke up because many member parties joined the European Conservatives and Reformists (ECR) group, including the Christian Union. The ECR leadership did not want the SGP to join the new European parliamentary group because of its conservative views on women.^[2] The IND/DEM group reorganised and renamed itself to Europe of Freedom and Democracy (EFD). The SGP joined this new group.
• 2014: The ECR accepted the SGP after all, as the SGP had softened its position on female suffrage. Since the 2014 European Parliament election, the Christian Union and SGP are thus again part of the same group.
• 2019: The CU left the ECR, arguing that it was moving too far to the right by including MEPs from far-right parties such as the Dutch Forum for Democracy and the Sweden Democrats. The party instead joined the European People's Party Group while SGP stayed in ECR.