John Reid Walker JP TD (4 June 1855 – 6 March 1934) was a British polo player and racehorse breeder.
There he bred Invershin and Inkerman, both bay colts by the sire Invincible and both high class stayers.
Invershin won back-to-back Gold Cups at Ascot in 1928 and 1929, and other good races including successive victories in the Caledonian Hunt and a Derby Cup.
Inkerman's two most notable wins were in the 1923 Jockey Club Stakes at Newmarket and the 1924 Chester Vase.
[1] He was a Justice of the Peace for Staffordshire and was appointed High Sheriff of Shropshire for 1917–18.