Marianne Christiansen (born June 18, 1963 in Haslev) is a Lutheran bishop in the Church of Denmark.
Christiansen gained a Candidate of Philosophy in music in 1989 and in science in 1992, both from Aarhus University.
From 1986 to 1991, together with former member of parliament of the Radical Left Henrik Svane, she served as a principal at the Music and Theater College in Toftlund, and from 1993 the parish priest of Skørping-Fræer.
In 1996 she became a lecturer at the Pastoral College in Aarhus specialising in Psalm knowledge and worship studies.
Marianne Christiansen is co-author of several books on liturgy and hymnology, as well as having extensive lectures.