Marianne Christine Stang Ihlen ([m??i'?n? 'il?n]; 18 May 1935 – 28 July 2016) was a Norwegian woman who was the first wife of author Axel Jensen and later the muse and girlfriend of Leonard Cohen for several years in the 1960s.
She was the subject of Cohen's 1967 track "So Long, Marianne", in which he sang that she "held on to me like I was a crucifix as we went kneeling through the dark".