Elizabeth Margaret Ross MacLennan (16 March 1938 – 23 June 2015) was a Scottish actress, writer and radical popular theatre practitioner.

[3] She read modern history at St Hilda’s College, Oxford, where she became active in experimental theatre productions,[4] sharing the bill with fellow students Dudley Moore, Alan Bennett, and Ken Loach.

With her husband, playwright John McGrath, and brother, David MacLennan, she helped to found 7:84 Theatre Company (in 1971) and 7:84 Scotland (in 1973).

[5] In 1990, she published an account of her time with the 7:84 company, The Moon Belongs to Everyone,[6] in which she acknowledges McGrath her "major 'influence' and life partner".

[3][15] "MacLennan was one of nature's fiery spirits, who wholeheartedly put her beliefs into action", commented critic Michael Billington in her obituary in The Guardian.