| Country: | Spain |
| Grand Prix: | Catalunya |
| Gp3 Round No: | 1 |
| Gp3 Season No: | 9 |
| Year: | 2015 |
| Location: | Circuit de Catalunya Montmeló, Spain |
| Course: | Permanent racing facility |
| Course Mi: | 2.892 |
| Course Km: | 4.665 |
| Gp3date R1: | 9 May |
| Gp3laps R1: | 22 |
| Gp3pole Driver Country: | ITA |
| Gp3pole Driver: | Luca Ghiotto |
| Gp3pole Team: | Trident |
| Gp3pole Time: | 1:35.469 |
| Gp3first Driver Country R1: | FRA |
| Gp3first Driver R1: | Esteban Ocon |
| Gp3first Team R1: | ART Grand Prix |
| Gp3second Driver Country R1: | ITA |
| Gp3second Driver R1: | Luca Ghiotto |
| Gp3second Team R1: | Trident |
| Gp3third Driver Country R1: | GBR |
| Gp3third Driver R1: | Emil Bernstorff |
| Gp3third Team R1: | Arden International |
| Gp3fast Driver Country R1: | FRA |
| Gp3fast Driver R1: | Esteban Ocon |
| Gp3fast Team R1: | ART Grand Prix |
| Gp3fast Time R1: | 1:38.997 |
| Gp3fast Lap R1: | 2 |
| Gp3date R2: | 10 May |
| Gp3laps R2: | 17 |
| Gp3first Driver Country R2: | GER |
| Gp3first Driver R2: | Marvin Kirchhöfer |
| Gp3first Team R2: | ART Grand Prix |
| Gp3second Driver Country R2: | SWE |
| Gp3second Driver R2: | Jimmy Eriksson |
| Gp3second Team R2: | Koiranen GP |
| Gp3third Driver Country R2: | GBR |
| Gp3third Driver R2: | Jann Mardenborough |
| Gp3third Team R2: | Carlin |
| Gp3fast Driver Country R2: | GER |
| Gp3fast Driver R2: | Marvin Kirchhöfer |
| Gp3fast Team R2: | ART Grand Prix |
| Gp3fast Time R2: | 1:38.197 |
| Gp3fast Lap R2: | 2 |
The 2015 Catalunya GP3 Series round was a GP3 Series motor race held on May 9 and 10, 2015 at Circuit de Catalunya, Montmeló, Spain. It was the first round of the 2015 GP3 Series. The race supported the 2015 Spanish Grand Prix.
Luca Ghiotto took pole position and Esteban Ocon took the victory in the feature race, while Marvin Kirchhöfer took the victory in the sprint race.
| Pos | No | Driver | Team | Time | Grid | |
|---|---|---|---|---|---|---|
| 1 | 27 |  Luca Ghiotto | Trident | 1:35.469 | 1 | |
| 2 | 6 |  Esteban Ocon | ART Grand Prix | 1:35.608 | 2 | |
| 3 | 15 |  Emil Bernstorff | Arden International | 1:35.800 | 3 | |
| 4 | 24 |  Álex Palou | Campos Racing | 1:35.846 | 4 | |
| 5 | 21 |  Mathéo Tuscher | Jenzer Motorsport | 1:35.909 | 5 | |
| 6 | 5 |  Marvin Kirchhöfer | ART Grand Prix | 1:35.934 | 6 | |
| 7 | 4 |  Alfonso Celis Jr. | ART Grand Prix | 1:35.943 | 7 | |
| 8 | 28 |  Óscar Tunjo | Trident | 1:36.047 | 8 | |
| 9 | 20 |  Pål Varhaug | Jenzer Motorsport | 1:36.082 | 9 | |
| 10 | 11 |  Jimmy Eriksson | Koiranen GP | 1:36.134 | 10 | |
| 11 | 3 |  Mitchell Gilbert | Carlin | 1:36.143 | 11 | |
| 12 | 22 | Ralph Boschung | Jenzer Motorsport | 1:36.160 | 12 | |
| 13 | 10 |  Adderly Fong | Koiranen GP | 1:36.213 | 13 | |
| 14 | 8 | Alex Fontana | Status Grand Prix | 1:36.284 | 14 | |
| 15 | 2 | Jann Mardenborough | Carlin | 1:36.305 | 15 | |
| 16 | 12 | Matt Parry | Koiranen GP | 1:36.403 | 16 | |
| 17 | 26 |  Artur Janosz | Trident | 1:36.478 | 17 | |
| 18 | 9 |  Sandy Stuvik | Status Grand Prix | 1:36.534 | 18 | |
| 19 | 14 | Kevin Ceccon | Arden International | 1:36.593 | 19 | |
| 20 | 7 | Seb Morris | Status Grand Prix | 1:36.634 | 20 | |
| 21 | 1 | Antonio Fuoco | Carlin | 1:36.785 | 21 | |
| 22 | 23 | Zaid Ashkanani | Campos Racing | 1:37.288 | 22 | |
| 23 | 16 | Aleksander Bosak | Arden International | 1:37.549 | 23 | |
| 24 | 25 |  Samin Gómez | Campos Racing | 1:38.409 | 24 | |
| Source:[1] | ||||||