Maren Juel (18 March 1749 – 20 February 1815) was a Norwegian landowner, regarded as the wealthiest woman in Norway at her time.

She was born in Christiania (now Oslo) as the daughter of timber trader and civil servant Hans Juel (1702–1765).

He had accumulated a number of estates and was regarded for his time to be one of the most wealthy men in the country.

In 1796 Juel married Marcus Gjøe Rosenkrantz, later member of the Parliament of Norway and Government Minister.

Her heirs included her niece, Gjertrud Maren Juel who was married to Lars Ingier.