John Yarker (17 April 1833 – 20 March 1913) was an English Freemason, author, and occultist. He was born in Swindale, Shap, Westmorland, in the north of England. He moved with his parents to Lancashire and on to Manchester in 1849. Ηe was descended from Reinhold Yarker de Laybourne who lived in the mid 17th century.