The Jaca Navarra (Basque: Nafarroako zaldiko), or Navarrese Horse, is a Spanish breed of small horse from the autonomous community of Navarre in the north-eastern part of the country.

[4] The total population of the Jaca Navarra has been variously estimated at 350 (in 1999),[5] 250 (in 2000),[6] and 240 and decreasing (in 1997).

[7]: 739 [1]: 109 A breeders' association, the Asociación de Criadores de Ganado Equino Jaca Navarra, was formed in 1999,[5] and a stud-book opened in 2001.

[9] The conservation and reference herd kept in semi-feral conditions at the Sabaiza estate contains all but a few examples of the breed.

[9] The word jaca has an unusual history, from Old Spanish haca, itself from Old French haque, which in turn is ultimately derived from the English place-name Hackney, a place famous for its horses.