Widecombe Fair is an annual fair in England, held in the Dartmoor village of Widecombe-in-the-Moor on the second Tuesday in September. It is well known as the subject of the folk song of the same name, featuring Uncle Tom Cobley and his friends.

Today's visitors will still see displays of quality livestock, although there are many other attractions, including: a dog show, displays of local produce, vintage farm machinery, rural arts and crafts, bale tossing and a now traditional appearance by "Uncle Tom Cobley": a local resident in fancy dress, riding a grey mare.