Peter Mitchell-Thomson, 2nd Baron Selsdon (28 May 1913 – 7 February 1963) won the 1949 24 Hours of Le Mans together with Luigi Chinetti in a Ferrari 166 MM.
He was the son of William Lowson Mitchell-Thomson, 1st Baron Selsdon (1877–1938), and the father of Malcolm McEacharn Mitchell-Thomson, 3rd Baron Selsdon (b.