Marius Røhne (25 April 1883 – 30 August 1966) was a Norwegian landscape architect.

Røhne was born in Løten to farmer Mons Røhne and Inger Marie Jakobsdatter Helseth.

He was married twice, first to Ingeborg Marie Gundestrup, and second to Astri Alfrida Mathilde Viddal.

He practiced as garden architect in Kristiania from 1913, and was partly responsible for planning the park areas for the 1914 Jubilee Exhibition at Frogner.

From 1916 to 1948 he was appointed city gardener and leader of the Park Authority in Oslo.