Theodore Dwight (1796–1866), was an American author.
Theodore Dwight was born March 3, 1796 in Hartford, Connecticut. His father was Theodore Dwight (1764–1846) of the New England Dwight family. His mother was Abigail Alsop (1765–1846), the sister of Richard Alsop (1761–1815). He graduated from Yale College in 1814. He compiled the travelogues of his uncle, Timothy Dwight IV, previously president of Yale, which he brought to publication in 1821. In 1825 he published the second tourist guidebook in the United States, The Northern Traveller, which he would update with regular editions until 1841. A commentator on American society, he wrote a number of works on child rearing, school reform, and in the 1850s and 1860s passionately advocated for the cause of Garibaldi and the unification of Italy.
He married Eleanor Boyd on April 24, 1827. Their children were:
He died on October 16, 1866 in Brooklyn, New York from injuries in a train accident while traveling to Newark, New Jersey. After accompanying his daughter and two grandchildren, he had jumped off the train as it left the station.