John Munday (or Mundy) (c. 1550/1554–1630) was an English composer, virginalist, and organist of the Renaissance period.

The son and pupil of the eminent composer William Munday, he was organist at Eton, and succeeded John Marbeck after his death in 1585 as organist at St George's Chapel, Windsor. He received a bachelor of music degree from the University of Oxford in 1586, and his doctorate in 1624. In 1585 he was appointed joint organist of Westminster Abbey with Nathaniel Giles, a post he maintained until his death in 1630.

Munday was one of the earliest English madrigalists. He published a volume of Songs and Psalms in…