| Bas Belder | |
| Honorific-Suffix: | MEP |
| Term Start: | 13 June 1999 |
| Term End: | 2 July 2019 |
| Constituency: | Netherlands |
| Birth Name: | Bastiaan Belder |
| Birth Date: | 25 October 1946 |
| Birth Place: | Ridderkerk, South Holland, Netherlands |
| Party: |  NetherlandsReformed Political Party European Conservatives and Reformists |
| Children: | 3 |
| Alma Mater: | Utrecht University |
Bastiaan "Bas" Belder (born 25 October 1946) is a Dutch politician and former Member of the European Parliament (MEP) from the Netherlands.[1] He is a member of the Staatkundig Gereformeerde Partij, part of the European Conservatives and Reformists.[2] [3] He sat on the European Parliament's Committee on Foreign Affairs. He was a substitute for the Committee on Agriculture. Furthermore he was vice-chairman of the delegation for the relations between the European Parliament and Israel and chairman of the European Parliament Working Group on Human Dignity.
In the 2019 European Parliament election he was succeeded by Bert-Jan Ruissen.
Bas Belder is married and has three children. He is a member of the Protestant Church in the Netherlands (PKN).