The King's Disguise, and Friendship with Robin Hood is an English ballad of Robin Hood. It is a relatively late work in the corpus, found in the Forresters Manuscript from the 1670s. The work seems loosely based on the 7th and 8th fyttes of A Gest of Robyn Hode which recounts the end of Robin Hood's outlawry after an encounter with the king. Unlike Gest, the king is not acting out of the need to suppress Robin; additionally, The King's Disguise and Friendship uses the 17th century updates to the legend that places Robin as contemporaneous with King Richard's reign. In the late 1800s, Francis James Child included it in his influential collection, the Child Ballads, as #151.

A Gest of Robyn Hode is one of the earliest surviving texts of the Robin Hood tales. Written in late Middle English poetic verse, it is an early example of an English language ballad, in which the verses are grouped in quatrains with an ABCB rhyme scheme, also known as ballad stanzas. Gest, which means tale or adventure, is a compilation of various Robin Hood tales, arranged as a sequence of adventures involving the yeoman outlaws Robin Hood and Little John, the poor knight Sir Richard at the Lee, the greedy abbot of St Mary's Abbey, the villainous Sheriff of Nottingham, and King Edward of England. The work survives in printed editions from the early 16th century, just some 30 years after the first printing press was brought to England. Its popularity is proven by the fact that portions of more than ten 16th- and 17th-century printed editions have been preserved. While the oldest surviving copies are from the early 16th century, many scholars believe that based on the style of writing, the work likely dates to the 15th century, perhaps even as early as 1400. The story itself is set somewhere from 1272 to 1483, during the reign of a King Edward; this contrasts with later works, which generally placed Robin Hood earlier in 1189–1216, during the reigns of Richard I of England and John, King of England.