Theodore Dwight Woolsey (31 October 1801 – 1 July 1889) was an American academic, author and President of Yale College from 1846 through 1871.

For some time, Woolsey was a tutor at Yale, then went abroad to study Greek in Leipzig, Bonn, and Berlin.

After Noah Porter served as president, the office was back in the family as his cousin once removed Timothy Dwight V (1828–1916), was selected in 1886.

Woolsey was one of the founders of the New Englander, chairman of the American commission for the revision of the Authorized Version of the Bible, president of the World's Evangelical Alliance at its international meeting in New York, a lifelong member and at one time president of the American Oriental Society, and a regent of the Smithsonian Institution.

The statue erected in Woolsey's memory, now displayed on Yale's Old Campus, has a golden toe from being rubbed for good luck.