* Hookworms (Ancylostoma duodenale and Necator americanus)
* Pinworms (Enterobius vermicularis)
* Trichinella spiralis (the agent of trichinosis)
* Filarial worms (Wuchereria bancrofti and Brugia malayi, which are agents of filariasis)
* Guinea worms (Dracunculus medinensis)
* Vinegar eels (Turbatrix aceti)
* Horsehair worms (Nematomorpha)