Lady Marian (née Balfour) Busk (1861 – 31 March 1941) was a British botanist and translator.
[1] She was known for her translation of Das Pflanzenleben der Donauländer by Anton Kerner von Marilaun.
[2] Busk was the daughter of silk merchant Lewis Balfour.
After private study in botany and chemistry she earned in 1883 one of the first bachelor's degrees given to women by Queen's College, London.
She married legal scholar Edward Henry Busk in 1880; he was knighted in 1901.