The GT Cup Open Europe is a grand tourer-style sports car racing series founded in 2019 by the Spanish GT Sport Organización.

The series consists of events in various European countries which feature two races over a weekend.

Each weekend the series hosts two 55 minute races with two separate qualifying sessions determining the grid order.

Usually this series supports the International GT Open as separate races on the same race weekends, but starting in 2020 due to low car counts, GT Sport decided to combine the two series' races if there were less than 9 GT Cup Open Europe entries.

Eligible models include all homologated FIA GT4 cars such as the Mercedes AMG GT4 and the Audi R8 LMS GT4 as well as one-make category cars such as the Lamborghini Huracán Super Trofeo and the Porsche 991 Carrera Cup.