Daniel Maynadier Henry (February 19, 1823 – August 31, 1899) was an American politician.
He studied law, was admitted to the bar in 1844, and practiced in Cambridge.
Henry began his political career as a member of the Maryland House of Delegates in 1846, and again later in 1849.
After his tenure in Congress, Henry continued the practice of law until his death.
He is interred in Christ Protestant Episcopal Church Cemetery.