Australian Miller on Moto3 pole in Jerez

Australian Jack Miller is in line to claim his third Moto3 world championship race of the season after grabbing pole position at the Spanish Grand Prix.

Australian Jack Miller has claimed pole position in the Spanish Grand Prix in Jerez. (AAP)

Australian Jack Miller claimed pole position for Sunday's Spanish Grand Prix in Jerez with a commanding performance on Saturday.

The Moto3 world championship leader finished over half a second ahead of Italy's Niccolo Antonelli and Spaniard Alex Rins in a time of 1min 46.173sec to claim just his third career pole.

Having won in Doha and Austin in the opening two races of the season, Miller, riding a KTM, was third in Argentina as Romano Fenati moved into second place in the overall standings.

However he will be confident of extending his 17-point lead as Fenati qualified down in 10th and Efren Vazquez, currently third in the title race, will start on the third row of the grid in seventh.