Petra Müllejans (born 1959 in Düsseldorf) is a German violinist, conductor and pedagogue, known especially for her work in historical performance practice and as a co-founder and performer with the Freiburger Barockorchester. In 1987 she was co-founder of the Freiburger Barockorchester, whose musical direction she shares with her colleague Gottfried von der Goltz. She also appears as soloist and chamber musician with the Freiburg Baroque Consort. Petra Müllejans is Professor of Baroque Violin at the Hochschule für Musik Freiburg and at the Frankfurt University of Music and Performing Arts.