Ethel de Keyser OBE OLG (4 November 1926 — 16 July 2004) was a South African anti-apartheid activist based in London, England.
Back in England, she worked for the London Symphony Orchestra while volunteering for the Anti-Apartheid Movement (AAM), eventually becoming its executive secretary.
[3] She led campaigns to maintain the British arms embargo against South Africa, and to refuse recognition to the Ian Smith regime in Rhodesia.
She helped organize SATIS (South Africa The Imprisoned Society), a conference and network for those working for the release of political prisoners.
[6] Ethel Tarshish was married to actor David de Keyser for ten years (from 1949 to 1959), and she had a longterm relationship with writer George Lamming.