Ragnhild Helene Hennum (born 11 June 1967) is a Norwegian jurist, academic administrator and women's rights leader.
She is Professor of Public Law at the University of Oslo Faculty of Law and Director of the Norwegian Centre for Human Rights.
Hennum served as Pro-Rector of the University of Oslo, the university's second highest official, 2014–2017.
She previously served as the university's Vice-Rector 2009–2014.
Hennum's research fields are criminal law, criminal procedure and sociology of law, and she is a specialist on child sexual abuse, sexual violence in general and forced marriage.
She is President of the Norwegian Women's Lobby, the umbrella organisation for the Norwegian women's movement.