Emmanuel Adriaenssen (also Adriaensen, Adriansen, Hadrianus, Hadrianius; c. 1554 in Antwerp – buried 27 February 1604 in Antwerp) was a Flemish lutenist, composer and master of music. He authored the influential Pratum Musicum, which contains scores for lute solos, and more importantly settings of madrigals for multiple lutes and different ensembles involving lutes and voices. He also had an important influence on the next generation of lutists through his activity as a teacher of music in his own music school.