Hymenaei, or The Masque of Hymen, was a masque written by Ben Jonson for the marriage of Robert Devereux, 3rd Earl of Essex, and Lady Frances Howard, daughter of the Earl of Suffolk, and performed on their wedding day, 5 January 1606. The costumes, sets, and scenic effects were designed by Inigo Jones, and the music composed by Alfonso Ferrabosco.
One of Jonson's earlier masques, Hymenaei is significant in the evolution of the masque form in the early 17th century; its two sets of contrasting dancers constituted one step in the evolution of the anti-masque that Jonson would realize fully in The Masque of Queens three years later (1609).