Helminths in endemic Australian lizards of 3 families from Western Australia, Australia, and the Northern Territory, Australia, Lophognathus longirostris (Agamidae), Heteronotia binoei and Lucasium stenodactylum (Gekkonidae), and Ctenotus grandis, Ctenotus helenae, Cyclodomorphus branchialis, Egernia depressa, Eremiascincus richardsonii, Morethia butleri, and Morethia lineoocellata (Scincidae), are reported. Found were 2 species of Cestoda, Cylindrotaenia allisonae and Oochoristica australiensis, and 10 species of Nematoda—gravid individuals of Cosmocercinae gen. sp., Maxvachonia brygooi, Maxvachonia chabaudi, Moaciria sphenomorphi, Parapharyngodon fitzroyi, Parapharyngodon kartana, Pharyngodon asterostoma, Spauligodon ovifilus, and Wanaristrongylus ctenoti,—and third stage larvae of Abbreviata sp. Helminth infections of Australian lizards appear to be opportunistic with negligible host specificity. Sixteen new host records are reported.