Taenia crassiceps is a tapeworm in the family Taeniidae. It is a parasitic organism whose adult form infects the intestine of carnivores, like canids. It is related to Taenia solium, the pork tapeworm, and to Taenia saginata, the beef tapeworm. It is commonly found in the Northern Hemisphere, especially throughout Canada and the northern United States.

Natural intermediate hosts of this organism are usually small rodents and moles. The larval stages of T. crassiceps develop subcutaneously or in their body cavities as cysticerci which are cyst-like structures