Morris Schaff (December 28, 1840 – October 19, 1929) was an American military officer and historian.
Schaff lived in Kirkersville, Ohio, between 1849 and 1858, when he was appointed by Congressman Samuel S. Cox to attend the United States Military Academy.
After marrying Alice Page Schaff in 1868 and moving to Massachusetts, he was Superintendent of the Berkshire Glass Works for 11 years, and spent 26 years in public service with the State Gas and Electric Light Commission of Massachusetts.
Schaff embarked on a writing career late in life, publishing his first book in 1905.
Morris Schaff died in Southboro, Massachusetts, on October 19, 1929, and was buried at Pittsfield Cemetery.