Charles Shirreff (26 July 1768 – 5 May 1847) was an early Canadian businessman and public official. He was born in Leith, Scotland in 1768. In 1817, he migrated to Smith's Creek, later Port Hope, in Upper Canada. He obtained a grant of land in Fitzroy Township in the upper Ottawa Valley and moved there in 1818. He founded the town of Fitzroy Harbour, Ontario on the Ottawa River in 1831 and built a grist mill there. During the 1830s, Shirreff promoted a plan to connect the Ottawa River to Georgian Bay via a canal. Shirreff died in Bytown in 1847.