Court Martial (foaled 1942 in England – died in 1974) was a Thoroughbred racehorse bred and raced by Lord Astor best known for defeating two exceptional colts in Dante and Royal Charger for the Classic 2000 Guineas Stakes and as a two-time leading sire in Great Britain and Ireland.

John Hislop describes Court Martial as "A beautiful horse of superb quality, truly made, sound and possessed of excellent limbs, but with shelly feet a trait which he has handed on ...

Though having a measure of stamina, speed was Court Martial's forte, which is reflected in his stock.

At three, he won the 2000 Guineas Stakes and the Champion Stakes and was third in The Derby, where he finished two lengths and a head away third to Dante and Midas in a field of 27 runners in the time of 2 min 26.6 sec.

[2] Notable progeny include: About 25 of Court Martial's sons have been imported to Australia and New Zealand since 1954 and have sired the collective winners of almost $8 million in prize money.