Ellen Mary Clerke (20 September 1840 – 2 March 1906) was an author, journalist, poet and popular science writer in the field of astronomy. She was born in Skibbereen, County Cork, in Ireland. She wrote for the London Tablet, and also spent much time in Italy. Clerke also wrote for the Dublin Review.
Agnes Mary Clerke, also a writer on astronomy, was her sister, and they were the children of Judge's Registrar, John William Clerke (c.1807-1890) and his wife Margaret (b.c1819).