Thomas Ravenscroft (c. 1582 or 1592 until 1635) was an English composer, theorist and editor, notable as a composer of rounds and catches, and especially for compiling collections of British folk music.

He probably sang in the choir of St. Paul's Cathedral from 1594, when a "Thomas Raniscroft" was listed on the choir rolls; likely he remained there until around 1600, under the directorship of Thomas Giles . He probably received his bachelor's degree in 1605 from Cambridge.

Ravenscroft's principal contributions are his collections of folk music, including catches, rounds, street cries , vendor songs, "freeman's songs" and other anonymous music, in three collections: Pammelia (1609), Deuteromelia (1609) and Melismata (1611). Some of the music he compiled has acquired quite extraordinary fame, though his name is rarely associated with the music: for example "Three Blind Mice" first appears in Deuteromelia. He also published a metrical psalter (The Whole Booke of Psalmes) in 1621. As a composer his works are mostly forgotten, but they include 11 anthems, 3 motets for five voices and four fantasias for viols.

In addition to his activities as a composer and editor, he wrote two treatises on music theory: A Briefe Discourse of the True (but Neglected) Use of Charact'ring the Degrees ... (London, 1614), and A Treatise of Musick, which remains in manuscript (unpublished).

External links to his works

• Pammelia
• Deuteromelia
• Melismata
• Brief
• Psalter