Diederik Bangma (born 22 May 1990) is a Dutch football goalkeeper who currently play for German Regionalliga Nord club Cloppenburg.

During his early years Bangma played at GVVV Veenendaal before being picked up by the youth academy of SC Heerenveen in 2004.

Due to injuries of Kenny Steppe, Brian Vandenbussche and Martin Lejsal he debuted on February 27, 2010, in the match against Heracles Almelo.

This was his only appearance in the first squad, since the club signed veteran Henk Timmer for the rest of the season as first goalkeeper.

In the summer of 2011 Bangma joined amateur-club WKE on a free transfer, which played in the Topklasse, the third level in Dutch football.