The following helminth parasites have been recorded from Cetacea caught off the British Columbia coast. Trematoda:Lecithodesmus goliath(fin whale),Lecithodesmus spinosusn. sp. (sei whale) andOgmogaster plicatus(fin and sei whales); Cestoda:Phyllobothrium delphini(sperm and fin whales); Nematoda:Anisakis simplex(sei, Baird's beaked and sperm whales),Anisakis physeteris(sperm whale), immatureAnisakissp. (fin and humpback whales) andCrassicauda pacifican. sp. (fin whale); Acanthocephala:Bolbosoma turbinella(sei whale).Crassicauda pacificaandL.spinosusare illustrated and described, and compared with known species of their respective genera. The variations in morphology and measurements are discussed forO.plicatus. Notes on host and geographical distribution are cited for all parasites.Lecithodesmus goliathandO.plicatusare reported for the first time from the Pacific andP.delphiniwas previously unknown in the North Pacific.Bolbosoma turbinellais a new record for the northeast Pacific andA.physeterisfor the Pacific coast of Canada. Baird's beaked whale and possibly the sperm whale are new host records forA.simplex. The fin whale is a new host record forP.delphiniandL.goliath.