The International Society for Trenchless Technology or ISTT is an organization founded in 1986 to promote and advance Trenchless Technology.
ISTT encourages the formation and affiliation of societies sharing its objectives worldwide. There are now more than 20 such Affiliated Societies in 6 continents. Each is entitled to nominate a Director on the ISTT Board. For efficient day-to-day running, an Executive Sub-Committee is empowered to act for the full Board.