La FIM ha redatto la seguente lista provvisoria per il Campionato del Mondo 2015 classe Moto3™.
| # | Rider | Nat. | Team | Machine |
|---|---|---|---|---|
| 5 | R. FENATI | ITA | SKY RACING TEAM VR46 | KTM |
| 9 | S. DEROUE | NED | RW RACING GP | HONDA |
| 10 | A. MASBOU | FRA | SAXOPRINT-RTG | HONDA |
| 11 | M. FERRARI | ITA | SAN CARLO TEAM ITALIA | MAHINDRA |
| 16 | A. MIGNO | ITA | SKY RACING TEAM VR46 | KTM |
| 17 | J. McPHEE | GBR | SAXOPRINT-RTG | HONDA |
| 19 | A. TONUCCI | ITA | AMBROGIO RACING | MAHINDRA |
| 20 | F. QUARTARARO | FRA | ESTRELLA GALICIA 0,0 | HONDA |
| 21 | F. BAGNAIA | ITA | MAPFRE ASPAR TEAM Moto3 | MAHINDRA |
| 22 | A. CARRASCO | SPA | BOE41 RBA TEAM | KTM |
| 23 | N. ANTONELLI | ITA | ONGETTA-RIVACOLD | HONDA |
| 24 | T. SUZUKI | JPN | CIP | MAHINDRA |
| 29 | S. MANZI | ITA | SAN CARLO TEAM ITALIA | MAHINDRA |
| 31 | N. AJO | FIN | BOE41 RBA TEAM | KTM |
| 32 | I. VINALES | SPA | CALVO TEAM | HUSQVARNA |
| 33 | E. BASTIANINI | ITA | GRESINI RACING Moto3 | HONDA |
| 40 | D. BINDER | RSA | AMBROGIO RACING | MAHINDRA |
| 41 | B. BINDER | RSA | RED BULL KTM AJO | KTM |
| 44 | M. OLIVEIRA | POR | RED BULL KTM AJO | KTM |
| 50 | H. ONO | JPN | KIEFER RACING | HONDA |
| 52 | D. KENT | GBR | KIEFER RACING | HONDA |
| 55 | A. LOCATELLI | ITA | GRESINI RACING Moto3 | HONDA |
| 57 | E. GRANADO | BRA | CALVO TEAM | HUSQVARNA |
| 58 | J. GUEVARA | SPA | MAPFRE ASPAR TEAM Moto3 | MAHINDRA |
| 63 | Z. KHAIRUDDIN | MAL | SEPANG INTERNATIONAL CIRC. | KTM |
| 65 | P. OETTL | GER | TT MOTION EVENTS | KTM |
| 84 | J. KORNFEIL | CZE | CIP | MAHINDRA |
| 88 | J. MARTIN | SPA | MAPFRE ASPAR TEAM Moto3 | MAHINDRA |
| 91 | G. RODRIGO | ARG | BOE41 RBA TEAM | KTM |
| 95 | J. DANILO | FRA | ONGETTA-RIVACOLD | HONDA |
| 98 | K. HANIKA | CZE | RED BULL KTM AJO | KTM |
| 99 | J. NAVARRO | SPA | ESTRELLA GALICIA 0,0 | HONDA |
| TO BE CONFIRMED | SEPANG INTERNATIONAL CIRC. | KTM |