The Appleby Horse Fair is a horse fair which is held annually at Appleby-in-Westmorland, Cumbria in England.

It is held every year in early June and has taken place since the reign of James II, who granted a Royal charter in 1685 allowing a horse fair "near to the River Eden". Since then, around ten thousand Gypsies, Scottish Travellers and Irish Travellers have converged each year to buy and sell horses, meet with friends and relations, and celebrate their similar lifestyles. Another thirty thousand people visit the fair during the week.

The event is closely supervised by members of the RSPCA to avoid anyone attending showing off just a little too much to the disadvantage of the horses involved.