Moto3 2018 Barcelona
| # | Piloto | Equipe | Moto | 4529 | Pneus | |
|---|---|---|---|---|---|---|
| 5 | Jaume Masia |  Platinum Bay Real Estate | KTM RC 250 GP | KTM M32 | Dunlop | |
| 7 |  Adam Norrodin | Petronas Raceline Malaysia Team Honda | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 8 | Nicolò Bulega | Team VR46 | KTM RC 250 GP | KTM M32 | Dunlop | |
| 10 | Dennis Foggia | Team VR46 | KTM RC 250 GP | KTM M32 | Dunlop | |
| 11 |  Livio Loi | Reale Avintia Racing | KTM RC 250 GP | KTM M32 | Dunlop | |
| 12 | Marco Bezzecchi |  Prustel GP | KTM RC 250 GP | KTM M32 | Dunlop | |
| 14 | Tony Arbolino | Snipers Team | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 16 | Andrea Migno | Ángel Nieto Team | KTM RC 250 GP | KTM M32 | Dunlop | |
| 17 |  John McPhee |  CIP | KTM RC 250 GP | KTM M32 | Dunlop | |
| 19 |  Gabriel Rodrigo | RBA Racing Team | KTM RC 250 GP | KTM M32 | Dunlop | |
| 21 | Fabio Di Giannantonio | Gresini Racing | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 22 |  Kazuki Masaki | RBA Racing Team | KTM RC 250 GP | KTM M32 | Dunlop | |
| 23 | Niccolò Antonelli | SIC58 Squadra Corse | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 24 | Tatsuki Suzuki | SIC58 Squadra Corse | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 25 | Raul Fernandez | Ángel Nieto Team | KTM RC 250 GP | KTM M32 | Dunlop | |
| 27 | Kaito Toba | Idemitsu Honda Team Asia | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 33 | Enea Bastianini | Leopard Racing | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 40 |  Darryn Binder |  Red Bull KTM Factory Racing (MXGP) | KTM RC 250 GP | KTM M32 | Dunlop | |
| 41 |  Nakarin Atiratphuvapat | Idemitsu Honda Team Asia | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 42 | Marcos Ramírez | Platinum Bay Real Estate | KTM RC 250 GP | KTM M32 | Dunlop | |
| 44 | Aron Canet | Estrella Galicia 0,0 | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 48 | Lorenzo Porta | Leopard Racing | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 65 | Philipp Ottl | Schedl GP Racing | KTM RC 250 GP | KTM M32 | Dunlop | |
| 71 | Ayumu Sasaki | Petronas Raceline Malaysia Team Honda | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 72 | Alonso Lopez | Estrella Galicia 0,0 | Honda NSF250RW | Honda MR03GP | Dunlop | |
| 75 | Albert Arenas | Ángel Nieto Team | KTM RC 250 GP | KTM M32 | Dunlop | |
| 76 |  Makar Yurchenko | CIP | KTM RC 250 GP | KTM M32 | Dunlop | |
| 77 | Vicente Perez | Reale Avintia Racing | KTM RC 250 GP | KTM M32 | Dunlop | |
| 84 |  Jakub Kornfeil | Prustel GP | KTM RC 250 GP | KTM M32 | Dunlop | |
| 88 | Jorge Martin | Gresini Racing | Honda NSF250RW | Honda MR03GP | Dunlop |
