Charles Joseph Osman (April 15, 1851 – 1922) was a businessman and political figure in New Brunswick, Canada. He represented Albert County in the Legislative Assembly of New Brunswick from 1897 to 1908 as a Liberal member. He was born in England, was educated in Hertfordshire and later emigrated to New Brunswick. Osman married Laura E. Tomkins. He was the manager of a plaster mill and quarries at Hillsborough. He was first elected in an 1897 by-election held after William James Lewis was elected to the House of Commons of Canada. Osman served as speaker from 1907 to 1908.