Wessel Dietrich van Diepen is a Dutch radio host, music producer, and former TV presenter.

Van Diepen is the station-voice for Radio 538 and FOX Television NL and does movie trailer voiceover work.

When he was 17 years old, during a holiday in Wichita, Kansas, U.S., he met a DJ at KKRD who gave van Diepen the opportunity to fill in for him.

In the 1990s, television moguls Erik de Zwart and Lex Harding left Veronica and started Radio 538 and van Diepen was asked to join them.

The show was officially opened by Martin Garrix smashing a bottle of champagne on van Diepen's head.