Marcus Pløen Ingstad was a Norwegian jurist and educator. He was a legal historian and scholar who was the author of several books on Roman law. He served as a Professor of Jurisprudence and Dean of the Faculty of Law at the University of Oslo between 1870 and 1918.
- Occupation
- professor, jurist
- Citizenship
- Norway
- Born
- August 18, 1837
- Died
- September 24, 1918
