Sarah Fitton (c. 1796 – 30 March 1874) was an Irish writer and botanist. Assisted by her sister Elizabeth, Sarah Fitton wrote Conversations on Botany (1817), framed as a series of conversations between a mother and her son on botany and the principles of Linnaean taxonomy. The book focuses on the identification and use of plants in a domestic setting, and influenced the popularity of botany as a field of scientific study for women. Color engravings differ between editions of the book.