Henry Champion Deming (May 23, 1815 – October 8, 1872) was a U.S. Representative from Connecticut.
Born in Colchester, Connecticut, the son of Gen. David and Abigail (Champion) Deming.Deming pursued classical studies. He was graduated from Yale College in 1836 where he was an 1836 initiate into the Skull and Bones Society, and from the Harvard Law School in 1839.
He was admitted to the bar in 1839 and began practice in New York City but devoted his time chiefly to literary work. At this time he was engaged with Park Benjamin, Sr. in editing The New World, a literary weekly, and at this time also he published a translation of Eugène Sue's The Wandering Jew.
He moved to Hartford, Connecticut, in 1847, and opened a law office. In 1849, 1850, 1859 and 1860, he was a member of the Connecticut House of Representatives. In 1854 he was elected Mayor of Hartford, Connecticut and served until 1858, and again from 1860 to 1862.
At the close of the year 1861, he was appointed Colonel of the 12th Connecticut Infantry Regiment, and accompanied Gen. Butler's expedition to New Orleans. After the capture of that city he was detailed Mayor of New Orleans, and served with tact and ability until January, 1863, when he resigned both military and civil position, on account of his own health and the health of his wife.