- Hassler, Hans Leo (b Nuremberg, baptised 26 October, 1564 - d Frankfurt, 8 June, 1612)
- Hassler was first taught by his father, then by Isaak Hassler, and then by Andrea Gabrieli in Venice. From 1586 to 1600 he was chamber musician to the Fuggers in Augsburg, and was chamber musician and later Kapellmeister at the Saxon court chapel in Dresden from 1608. He was influenced by Lassus, and the Venetians and was a prolific composer of Latin and German sacred music. While he was no innovator, he developed contemporary styles and earned a high reputation for his practical approach and craftsmanship.