Mahubah (1910–1931) was an American bred Thoroughbred racemare that was noted for producing the outstanding racehorse, Man o' War.

She was retired to broodmare duty in Lexington, Kentucky and she produced five foals, all by Fair Play.

The most notable of Mahubah's offspring was Man o' War, who ranked No.1 in the Blood-Horse magazine List of the Top 100 U.S. Racehorses of the 20th Century.

Mahubah also produced My Play who won the 1923 Aqueduct Handicap and the 1924 Jockey Club Gold Cup and later became a good sire.

[2] Mahubah died in 1931 at age 21 and was buried next to Fair Play at Elmendorf Farm.