A survey, conducted in Trinidad, revealed a total of 20 genera of nematodes associated with a wide range of agricultural crops. Important plant-parasitic nematodes found were: Meloidogyne incognita var. acrita Chitwood and Oteifa, M. javanica (Treub) Chitwood, Helicolylenchus dihystera (Cobb) Sher, H. multicinctus (Cobb) Golden, H. pseudorobustus (Steiner) Golden, Peltamigratus browni Khan and Zakiuddin, P luci Sher, Pratylenchus brachyurus (Godfrey) Filipjev and Schur. Stek., P zeae Graham, Tylenchorhynchus annulatus (Cassidy) Golden, Xiphinema elongatum Schur. Stek. and Teun., X. insigne Loos, X. krugi Lordello, X. pachtaicum (Tulaganov) Kirjanova, Trichodorus sp., Rotylenchulus reniformis Linford and Oliveira, Hemicriconemoides mangiferae Siddiqi, and Paratylenchus spp. Nematodes reported for the first time from Trinidad are Gracilacus sp., Helicotylenchus crenacauda Sher, H. mangiferae, X. pachtaicum, X. elongatum, X. krugi, X. insigne, and Boleodorus thylactus Thorne. Some of th