English poet principally known for his great Baroque devotional poem Christs Victorie.

He was the younger son of Giles Fletcher the Elder. He was educated at Westminster School and at Trinity College, Cambridge. After his ordination, he held a college position, and became known for his sermons at the Church of St. Mary the Great. He left Cambridge about 1618 and soon after received the rectory of Alderton, Suffolk.

The theme of Fletcher's masterpiece, Christs Victorie, and Triumph in Heaven, and Earth, over, and after death (1610), bears some resemblance to that of the religious epic Semaine (1578; Eng. trans., Devine Weekes and Workes, 1605) of the French Protestant poet Du Bartas; but the devotion, the passionate lyricism, and the exquisite vision of paradise that critics have praised are Fletcher's own. The poem is written in eight-line stanzas somewhat derivative of Edmund Spenser, of whom, like his brother Phineas, Giles was a disciple.