The 2016 World RX of Belgium was the third round of the third season of the FIA World Rallycross Championship. The event was held at the Circuit Jules Tacheny Mettet in Mettet, Wallonia and also played host to the second round of the 2016 FIA European Rallycross Championship.

The 2016 FIA World Rallycross Championship presented by Monster Energy was the third season of the FIA World Rallycross Championship. The season consists of twelve rounds and started on 16 April with the Portuguese round at Montalegre. The season ended on 27 November, at Rosario, Santa Fe in Argentina.