Deelnemerslijst World Supersport 300 2017
| Nr. | Naam | Merk | Team |
| 2 |  Ana Carrasco |
Kawasaki | ETG Racing |
| 5 |  Scott Deroue |
Kawasaki | MTM HS Kawasaki |
| 6 | Robert Schotman |
Yamaha | GRT Racing Team |
| 9 | Ruben Doorakkers |
Yamaha | MVR Racing |
| 12 |  Ali Adriansyah Rusmiputro |
Yamaha | Pertamina Racing Team |
| 13 |  Jacopo Facco |
Yamaha | 2R Road Racing |
| 14 |  Enzo de la Vega |
Yamaha | GRT Racing Team |
| 15 | Alfonso Coppola |
Yamaha | SK Racing |
| 16 |  Tim Georgi |
Yamaha | Freudenberg Racing Team |
| 17 | Gabriel Noderer |
Honda | Scuderia Maranga Racing |
| 18 |  Alex Murley |
Yamaha | Team Tóth |
| 20 |  Dorren Loureiro |
Kawasaki | DS Junior Team |
| 22 |  Mykyta Kalinin |
Yamaha | Team MotoxRacing |
| 23 | Manuel Bastianelli |
Kawasaki | 3570 Team Italia |
| 25 | Borja Sánchez |
Yamaha | Halcourier Racing |
| 27 | Filippo Rovelli |
Kawasaki | ParkinGO DS Junior Team |
| 28 | Paolo Giacomini |
Yamaha | Terra e Moto |
| 33 | Daniel Valle |
Yamaha | Halcourier Racing |
| 35 | Alessandro Triglia |
Honda | Scuderia Maranga Racing |
| 41 | Marc Garcia |
Yamaha | Halcourier Racing |
| 51 | Glenn van Straalen |
Honda | Vos - TKR Racing |
| 53 | Valentin Grimoux |
Yamaha | Team Tóth |
| 54 |  Harun Cabuk |
Kawasaki | Kawasaki Puccetti Racing |
| 55 | Galang Hendra Pratama |
Yamaha | Team MotoxRacing |
| 80 | Armando Pontone |
Yamaha | IodaRacing Project |
| 84 | Michael Carbonera |
Yamaha | SK Racing |
| 87 | Angelo Licciardi |
Yamaha | Team Trasimeno |
| 88 | Mika Perez |
Honda | WILSport Racedays |
| 91 |  Luca Bernardi |
Yamaha | MotorZenit |
| 95 | Giuseppe De Gruttola |
Yamaha | SK Racing |
| 97 | Maximilian Kappler |
Yamaha | Freudenberg Racing Team |
| 99 | Paolo Grassia |
Kawasaki | 3570 Team Italia |
| 121 |  Kimi Patova |
Yamaha | Kallio Race System |
| 33 deelnemers uit 12 landen | |||
Nationaliteiten
| Italië | 11 |
| Spanje | 5 |
| Nederland | 4 |
| Duitsland | 3 |
| Indonesië | 2 |
| Frankrijk | 2 |
| Groot-Brittannië | 1 |
| Zuid-Afrika | 1 |
| Oekraïne | 1 |
| Turkije | 1 |
| San Marino | 1 |
| Finland | 1 |