Bastiaan Johannis "Bas" van der Vlies (29 June 1942 – 7 November 2021) was a Dutch politician of the Reformed Political Party (SGP) and teacher.

He was also both Parliamentary leader and Leader of the Reformed Political Party from 22 May 1986 to 10 May 2010.

[1] Van der Vlies obtained a hydraulic engineering degree from the Delft University of Technology.

He worked as a maths teacher before becoming a politician.

This article about a Dutch politician is a stub.