Équipes participant à Circuito dell'Estoril
- AF Corse
- 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
- HADECA Racing
- KKrämer Racing
- Koiranen
- Konrad Motorsport
- Laptime-Performance
- MDM Motorsport
- Maxmore W&S Motorsport
- Mertel Motorsport
- Monteiros Competições
- Mühlner Motorsport
- Olimp Racing
- Ombra Racing
- PG Motorsport
- PTT Racing
- Pellin Racing
- Plusline Motorsport
- Proton Huber Competition
- R Engineering
- Racar Motorsport
- Racing Experience
- Racing Spirit of Leman
- Rafa Racing by Race Lab
- RedAnt Racing with Ajith Kumar Racing
- Rinaldi Racing
- SPS automotive performance
- SR Motorsport by Schnitzelalm
- SVG Motorsport
- Schumacher CLRT
- Target Competition
- Team GP Elite
- Team Parker Racing
- Uniq Racing
- Veloso Motorsport
- Wileco Motorsport
- ANS Motorsport