Delta Tau Delta (
ΔΤΔ) is a United States-based international Greek letter
college fraternity. Delta Tau Delta was founded in 1858 at
Bethany College,
Bethany, Virginia, (now
West Virginia). It currently has around 129 student chapters nationwide, as well as more than 27 regional alumni groups. Its national philanthropic partner is the diabetes research organization
JDRF.