Pius Parsch, born John Bruno Parsch (May 18, 1884 – March 11, 1954) was a priest of the Roman Catholic Church.
Parsch was born in Neustift near Olmutz, Moravia, in what is now the Czech Republic. He was given the name Pius when he entered the community of Canons Regular in Klosterneuburg Abbey. He was a leading figure in the Liturgical Movement, publishing the results of recent liturgical scholarship in popularly accessible books in German. Some of these were translated into English, including The Liturgy of the Mass (Herder, 1940), The Breviary Explained (id., 1952), and The Church's Year of Grace (Liturgical Press, 1953).
Parsch died on in Klosterneuburg, aged 59.
- Autobiographical chapter in The Book of Catholic Authors.