The 1975 Austrian Grand Prix was a Formula One motor race held at Österreichring on 17 August 1975. It was race 12 of 14 in both the 1975 World Championship of Drivers and the 1975 International Cup for Formula One Manufacturers. It was the eighth Austrian Grand Prix and the sixth to be held at the Österreichring. It was held over 29 of the scheduled 54 laps of the six kilometre circuit for a race distance of 171 kilometres. The race was shortened by heavy rain, meaning that only half points were awarded. The weekend itself was marred by the deaths of Mark Donohue and a track marshal in a practice crash.

Mastering the wet weather, the race was won by Italian driver Vittorio Brambilla driving a March 751. It was Brambilla's only Formula One win in his seven-year Grand Prix career. He took a 27-second win over British driver James Hunt in his Hesketh 308. Eight seconds further back was the Shadow DN5 of British driver Tom Pryce in the first of just two podiums in his abbreviated career.

Niki Lauda delighted his home crowd by claiming his seventh pole position of the year. Rolf Stommelen returned after his crash in Spain but could only muster 26th position for qualifying. Chris Amon had returned for Ensign but only being able to qualify in 24th. Brett Lunger qualified well in his début for Hesketh to start 17th.

Practice was marred by a series of accidents, Brian Henton crashing his Lotus when he hit an oil patch and Wilson Fittipaldi breaking two bones in his hand. During the warm-up on Sunday morning, Mark Donohue had a tyre failure and crashed at Vöest-Hügel, the flat-out right hander after the pits. The car went through catch fencing and advertising billboards lining the track. One track marshal was killed and another marshal was injured. Donohue was injured but suffered a brain hemorrhage after the accident and died two days later.

Donohue was the last driver for 41 years to die in a Formula One accident in the rain, until the death of Jules Bianchi in 2015 from injuries sustained at the 2014 Japanese Grand Prix.

As the grid formed up, there were reports of rain at the far side of the track. Thunderclouds were forming ominously and the cars were returned to the pits to change to wet tyres.

After 45 minutes, the grid reformed. Lauda led off the start from James Hunt and Patrick Depailler who had shot up from the fourth row. Mario Andretti spun off, whilst Bob Evans retired the BRM.

Vittorio Brambilla had shot through the spray to gain a third place, with Ronnie Peterson leaping from tenth to fourth.