Cyrus Carpenter Yawkey (August 29, 1862 – May 18, 1943) was an American businessman and politician.
Born in Chicago, Illinois, he moved with his family to Saginaw, Michigan, where he was educated.
He started out as a clerk and then owned a business.
He then moved to Wisconsin and started a sawmill in present-day Hazelhurst.
He served on the Hazelhurst town board and the Oneida County board of supervisors.
In 1895-1896, he served in the Wisconsin State Assembly as a Republican.
In 1899, he moved to Wausau, Wisconsin, where he had his lumber business.
During World War I, he was a colonel in the Wisconsin National Guard.