Peter Janssens (17 June 1934 – 24 December 1998) was a German musician and composer who wrote and performed incidental music for several theatres, and songs and musicals of the genre Neues Geistliches Lied, a pioneer of Sacropop.
He worked at a German theatre in Buenos Aires, set several works by Ernesto Cardenal to music and composed in 1992 a passion music, in memory of 500 years after the European invasion in Latin America.