Ethel Florence Lindesay Richardson, (3 January 1870 – 20 March 1946), known by her pen name Henry Handel Richardson, was an Australian author.
Born in East Melbourne, Victoria, Australia into a prosperous family that later fell on hard times, Ethel Florence (who preferred to answer to Et, Ettie or Etta) was the elder daughter of Walter Lindesay Richardson MD (c. 1826–79) and his wife Mary (née Bailey).
The family lived in various towns across Victoria during Richardson's childhood and youth. These included Chiltern, Queenscliff, Koroit and, most happily, Maldon, where Richardson's mother was postmistress (her father having died when she was 9, of syphilis). The Richardsons' home in Chiltern, 'Lake View', is now owned by the National Trust and open to visitors.