Theodore Dehon (December 8, 1776 – August 6, 1817) was the second bishop of the Episcopal Diocese of South Carolina.

He was ordained deacon by Bishop Edward Bass in Newburyport, Massachusetts, on December 24, 1797, and the next month began his call as rector of Trinity Church, Newport, Rhode Island.

After the General Convention in New York City in 1817, he returned to Charleston but contracted yellow fever, dying August 6.

His obituary in the Essex Register of Saturday 23 August 1817 reads: "To our bill of mortality we have to add the death of the Right Reverend Theodore Dehon, D.D aged 41, Bishop of the Protestant Episcopal Church of the English Communion, in S. Carolina, on the 6th instant.

To a suavity of manners, correct elocution, and a soul of devotion, he added the purity and best accomplishments of life, a just taste, and an excellent judgement, with an extensive knowledge of the duties and the studies of his profession."