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.

In the 2019 European Parliament election he was succeeded by Bert-Jan Ruissen.

This article about a Member of the European Parliament from the Netherlands is a stub.