The Matra MS9 was a Formula-1 race car designed and built by Matra in 1968.
The MS9 was a test car that was used in only one Formula 1 race. The car had a modified MS7 chassis and suspension of the Matra sports car. The car would have been a test vehicle for the Matra-12-cylinder engine but Ken Tyrrell insisted on testing the 8-cylinder engine from Cosworth. The car has been rebuilt since
As the MS10 was not ready, the MS9 was entered in the Grand Prix of South Africa in 1968. The car was assembled only on site, but qualified with the help of Jackie Stewart behind the wheel. In the race, the Scotsmanretired with an engine failure.