Loys Bourgeois Free sheet music
- Born: 1510
- Died: 1561
- Birthplace: Paris, France
Loys "Louis" Bourgeois was a French composer and music theorist of the Renaissance. He is most famous as one of the main compilers ofCalvinist hymn tunes in the middle of the 16th century. One of the most famous melodies in all of Christendom, the Protestant doxology known as the Old 100th, is commonly attributed to him.