Channing Harris Cox (October 28, 1879 - August 20, 1968) was a Massachusetts Republican politician and Governor born in Manchester, New Hampshire.

A graduate of Dartmouth College and Harvard Law School, Mr. Cox served as a member of the Massachusetts House of Representatives from 1911 to 1919, presiding as Speaker from 1915 to 1919. From 1919 to 1921, he served as Lieutenant Governor of Massachusetts during the administration of Governor Calvin Coolidge. A Republican, Cox was elected Governor in 1920, and served in that position from 1921 to 1925. His administration expanded upon many existing laws: workman's compensation payments were increased, farmers and domestic workers were included and made eligible for state benefits. Compulsory education was extended to all children, and child labor laws were expanded.

Governor Cox also responded to changes in the Massachusetts economy. He advocated policies and reforms to discourage speculative investment with borrowed funds. He instituted a corporate tax on income from real estate holdings and enabled trade unions both to sue and be sued. After governing two terms, Channing Cox retired to practice law in a private practice and worked with various banking and industrial firms.

Governor Cox died on August 20, 1968. He is buried in Forest Hills Cemetery in the Jamaica Plain section of the City of Boston.