Marion Eames was a Welsh language novelist. Marion was born in Birkenhead, Cheshire, of Welsh parents, but was brought up in Dolgellau from the age of 4, where she attended Dr Williams's School. A talented musician (she played the harp and piano), she graduated from Guildhall College, London.

Marion worked as a librarian in Dolgellau then at Aberystwyth University before becoming a radio producer with the BBC in Cardiff. She was an early scriptwriter for the long running Welsh language soap Pobol Y Cwm and was also for a time a regional organizer for Plaid Cymru.

Her best-known work is Y Stafell Ddirgel ("The Secret Room"), published in 1969. This was later made into a BBC television drama series.

A follow on novel was Y Rhiandir Mwyn ("The Fair Wilderness"). Her autobiography was published in 1995.