Pebalap dari tim Red Bull KTM Ajo BoBendsneyder berhasil mencatatkan waktu tercepat 1 menit 57.078 detik diikuti oleh pebalap dari Thailand Nakarin Atiratphuvapat yang terpaut 0,577 detik,
Di posisi ketiga ditempati oleh Joan Mir dari tim Leopard Racing.
Posisi keempat dan kelima diraih oleh Jules Danilo Marinelli Rivacold Snipers serta Jorge Martin dari tim Del Conca Gresini Moto3
Hasil Latihan Bebas 3 Moto3 Belanda 2017 Sirkuit Assen :
| Pos. | Num. | Pebalap | Negara | Team | Waktu | Km/h | Gap 1st/Prev. |
| 1 | 64 | Bo BENDSNEYDER | Belanda | Red Bull KTM Ajo | 1’57.078 | 203.4 | |
| 2 | 41 | Nakarin ATIRATPHUVAPAT | Thailand | Honda Team Asia | 1’57.655 | 205 | 0.577 / 0.577 |
| 3 | 36 | Joan MIR | Spanyol | Leopard Racing | 1’57.784 | 205.9 | 0.706 / 0.129 |
| 4 | 95 | Jules DANILO | Francis | Marinelli Rivacold Snipers | 1’58.029 | 206.3 | 0.951 / 0.245 |
| 5 | 88 | Jorge MARTIN | Spanyol | Del Conca Gresini Moto3 | 1’58.045 | 205 | 0.967 / 0.016 |
| 6 | 48 | Lorenzo DALLA PORTA | Italia | Mahindra Gaviota Aspar | 1’58.193 | 200 | 1.115 / 0.148 |
| 7 | 84 | Jakub KORNFEIL | Ceko | Peugeot MC Saxoprint | 1’58.220 | 200.8 | 1.142 / 0.027 |
| 8 | 5 | Romano FENATI | Italia | Marinelli Rivacold Snipers | 1’58.353 | 202.5 | 1.275 / 0.133 |
| 9 | 7 | Adam NORRODIN | Malaysia | SIC Racing Team | 1’58.382 | 203.6 | 1.304 / 0.029 |
| 10 | 8 | Nicolo BULEGA | Italia | SKY Racing Team VR46 | 1’58.497 | 201.6 | 1.419 / 0.115 |
| 11 | 24 | Tatsuki SUZUKI | Jepang | SIC58 Squadra Corse | 1’58.580 | 206.6 | 1.502 / 0.083 |
| 12 | 11 | Livio LOI | Belanda | Leopard Racing | 1’58.621 | 204.5 | 1.543 / 0.041 |
| 13 | 21 | Fabio DI GIANNANTONIO | Italia | Del Conca Gresini Moto3 | 1’58.657 | 203.6 | 1.579 / 0.036 |
| 14 | 19 | Gabriel RODRIGO | Argentina | RBA BOE Racing Team | 1’58.726 | 206.3 | 1.648 / 0.069 |
| 15 | 12 | Marco BEZZECCHI | Italia | CIP | 1’58.816 | 202.5 | 1.738 / 0.090 |
| 16 | 71 | Ayumu SASAKI | Jepang | SIC Racing Team | 1’58.881 | 205.2 | 1.803 / 0.065 |
| 17 | 14 | Tony ARBOLINO | Italia | SIC58 Squadra Corse | 1’59.044 | 203.9 | 1.966 / 0.163 |
| 18 | 44 | Aron CANET | Spanyol | Estrella Galicia 0,0 | 1’59.129 | 202.7 | 2.051 / 0.085 |
| 19 | 16 | Andrea MIGNO | Italia | SKY Racing Team VR46 | 1’59.383 | 204.6 | 2.305 / 0.254 |
| 20 | 65 | Philipp OETTL | Jerman | Südmetall Schedl GP Racing | 1’59.417 | 200 | 2.339 / 0.034 |
| 21 | 58 | Juanfran GUEVARA | Spanyol | RBA BOE Racing Team | 1’59.530 | 205.4 | 2.452 / 0.113 |
| 22 | 40 | Darryn BINDER | Afrika Selatan | Platinum Bay Real Estate | 2’00.270 | 203.7 | 3.192 / 0.740 |
| 23 | 27 | Kaito TOBA | Jepang | Honda Team Asia | 2’00.424 | 202.4 | 3.346 / 0.154 |
| 24 | 33 | Enea BASTIANINI | Italia | Estrella Galicia 0,0 | 2’00.479 | 203 | 3.401 / 0.055 |
| 25 | 42 | Marcos RAMIREZ | Spanyol | Platinum Bay Real Estate | 2’00.650 | 202.2 | 3.572 / 0.171 |
| 26 | 31 | Raul FERNANDEZ | Spanyol | Mahindra Gaviota Aspar | 2’00.682 | 200.3 | 3.604 / 0.032 |
| 27 | 23 | Niccolò ANTONELLI | Italia | Red Bull KTM Ajo | 2’00.797 | 203.3 | 3.719 / 0.115 |
| 28 | 6 | Maria HERRERA | Spanyol | AGR Team | 2’01.718 | 203.1 | 4.640 / 0.921 |
| 29 | 17 | John MCPHEE | Inggris | British Talent Team | 2’01.718 | 203 | 4.64 |
| 30 | 28 | Ryan VAN DE LAGEMAAT | Belanda | Lamotec Lagemaat Racing | 2’02.861 | 193.4 | 5.783 / 1.143 |
| 31 | 4 | Patrik PULKKINEN | Finlandia | Peugeot MC Saxoprint | 2’03.169 | 198.4 | 6.091 / 0.308 |
| 32 | 96 | Manuel PAGLIANI | Italia | CIP | 2’03.821 | 202 | 6.743 / 0.652 |
