Lizzie Allen Harker (née Watson; 1863 – 14 April 1933) was an English author.
Amongst her works are Marigold (with Francis R. Pryor), which was turned into a 1938 film Marigold.
She was born at Gloucester and educated at Cheltenham Ladies College. She was the wife (married 1885), and later widow, of James Allen Harker (1847–1894), professor at the Royal Agricultural College, Cirencester. Their sons were Oswald Allen Harker (1886–1968) and Brig. Arthur William Allen Harker CBE (1890–1960), and possibly more.
- A Romance of the Nursery 1902
- Concerning Paul and Fiammetta 1906
- His First Leave
- Miss Esperance and Mr Wycherly 1908
- Master and Maid
- The Ffolliots of Redmarley
- Mr Wycherly's Wards
- Jan and her Job
- Children of the Dear Cotswolds
- Allegra, 1919
- The Bridge Across, 1921
- Her Proper Pride (with F.R. Pryor)
- The Really Romantic Age, 1922
- Concerning Tod and Peter, 1923
- The Broken Bow, 1924
- Hilda Ware, 1926
- Marigold, with F.R. Pryor 1927
- Black Jack House, 1929
- ^ The Times, Saturday, 15 April 1933; pg. 12; Issue 46419; col D; Mrs. Allen Harker Authoress Of "Marigold" Category: Obituaries
- ^ Harker, L. Allen: Lizzie Watson in The Oxford Companion to Edwardian Fiction (eds) Sandra Kemp, Charlotte Mitchell, and David Trotter
- ^ 'HARKER, Mrs Allen (Lizzie)', Who Was Who, A & C Black, an imprint of Bloomsbury Publishing plc, 1920–2007; online edn, Oxford University Press, Dec 2007 accessed 21 Dec 2013