A hinny is a domestic equine hybrid, the offspring of a male horse (a stallion) and a female donkey (a jenny).

It is the reciprocal cross to the more common mule, which is the product of a male donkey (a jack) and a female horse (a mare).

[1]: 36  A hinny is generally smaller than a mule, with shorter ears and a lighter head; the tail is tasselled like that of its donkey mother.

[2] Hinnies and mules differ in temperament despite sharing nuclear genomes; this too is believed to be attributable to the action of imprinted genes.

[4] The dam of a foal carried to term in Henan Province of China in 1981 is variously reported to have been a mule[5] or a hinny.