John Henry Hubbard (March 24, 1804 in Salisbury, Connecticut – July 30, 1872 in Litchfield, Connecticut) was a Republican member of the United States House of Representatives from Connecticut's 4th congressional district from 1863 to 1867.

He also served as a member of the Connecticut Senate from 1847 to 1849.

He was born in Salisbury, Connecticut and attended the public schools.

He was admitted to the bar in 1828 and commenced practice in Lakeville.

He moved to Litchfield in 1855 and continued the practice of law.