Theodore Trapplan "Tappan" Michael Wentworth (February 24, 1802 – June 12, 1875) was an American lawyer and politician who served one term as a U.S. Representative from Massachusetts from 1853 to 1855.

He received a liberal schooling, and worked as a store clerk in Portsmouth, New Hampshire, and South Berwick, Maine.

He then studied law with William Burleigh, was admitted to the bar in 1826, and commenced practice in York County, Maine.

He was also active in several business ventures including railroads and banking, and served as president of Rhode Island's National Rubber Company.

As a result, he was sometimes employed by Whigs as a negotiator to create compromises with congressional Democrats and the Pierce administration.