This is a list of the Opiliones or harvestmen of Trinidad and Tobago. Representatives of ten families are currently known to live on Trinidad, the information on Tobago is still sparse.Goodnight and Goodnight[1] produced one of the first listings of Trinidad opiliones in 1947 in a paper in which they named several new species. In Kury's[2] 2003 catalogue of New World opiliones Trinidad was covered as well. The most recent work was done by Townsend, Proud and Moore[3] in 2008 and included several new species that are still awaiting identification.