Delta Tau Delta (ΔΤΔ) is a United States-based international Greek letter college fraternity. Delta Tau Delta was founded at Bethany College, Bethany, Virginia, in 1858. The fraternity currently has around 130 collegiate chapters and colonies nationwide, with an estimated 10,000 undergraduate members and over 170,000-lifetime members. Delta Tau Delta is informally referred to as "DTD" or "Delts."

Bethany College is a private liberal arts college in Bethany, West Virginia. Founded in 1840 by Alexander Campbell of the Restoration Movement, who gained support by the Virginia legislature, Bethany College was the first institution of higher education in what is now West Virginia.