Equips que participen en Circuit d'Estoril
- AF CORSE SRL
- AF Corse
- AF Motorsport
- Araújo Competição
- Auto Sport Racing
- BDR Competition by Grupo Prom
- BWT Mucke Motorsport
- Century Motorsport
- Die Biermacher Racing
- ENRICO FULGENZI RACING
- EST1 Racing
- Elite Motorsport
- FK Performance Motorsport
- Fach Auto Tech
- GT3 Poland
- Grupo Prom Racing Team
- HADECA Racing
- KKrämer Racing
- Kessel Racing
- Koiranen
- Konrad Motorsport
- LIQUI MOLY Team Engstler
- Laptime-Performance
- MDM Motorsport
- Maxmore W&S Motorsport
- Mertel Motorsport
- Monteiros Competições
- Mühlner Motorsport
- Olimp Racing
- Ombra Racing
- Orange Racing by JMH
- PG Motorsport
- PTT Racing
- Pellin Racing
- Plusline Motorsport
- Proton Huber Competition
- Racar Motorsport
- Race Car Consultants Ltd
- Racing Experience
- Racing Spirit of Leman
- Rafa Racing by Race Lab
- Red Ant Racing
- RedAnt Racing with Ajith Kumar Racing
- Rinaldi Racing
- SEEBACH Motorsport
- SPS automotive performance
- SR Motorsport by Schnitzelalm
- SVG Motorsport
- Schumacher CLRT
- Sendom Racing Team
- Target Competition
- Team GP Elite
- Team Parker Racing
- Team75 Motorsport GmbH
- Track Experience by Manthey
- Uniq Racing
- VSR
- Veloso Motorsport
- Wileco Motorsport
- a-workx Motorsport
- ANS Motorsport
- DKR Engineering
- PTerting Sports by Up2Race
- Spark Racing