Louisa Sarah Bevington (born St John's Hill, Battersea, Surrey, now London Borough of Wandsworth, 14 May 1845; died Lechmere Road, Willesden Green, Middlesex, now London Borough of Brent, 28 November 1895) was an English anarchist, essayist and poet. Among those who attended her funeral was Peter Kropotkin. She began to write poetry at an early age, probably appearing first with two sonnets in the Friends' Quarterly Examiner in October 1871. Bevington's first collection, the 23-page Key Notes, appeared in London in 1876 under the pseudonym Arbor Leigh. A second publication, Key-Notes: 1879, appeared under the name L. S. Bevington and seemed to query some established Christian codes of conduct.