Janet Taylor (born Jane Ann Ionn; 13 May 1804 – 25 January 1870) was an English astronomer, navigation expert, mathematician, meteorologist, and founder of the George Taylor Nautical Academy. She was the author of various astronomy and navigation works, and owner of a navigational instrument production and repair warehouse.
Her "George Taylor Nautical Academy" was highly regarded by the East India Company, Trinity House, and the Admiralty. She received medals from both the King of Prussia and King of the Netherlands, and her rule for calculating latitude from altitude was described as "ingenious". Taylor was among the few women working as a scientific instrument designer in 19th century London. Her 1834 patented "Mariner's Calculator" was dismissed by the Admiralty, and was later reassessed as "genius but impractical in the 'clumsy' hands of its potential users."
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