Ero-guro is a genre of Japanese pornography and hentai involving blood, gore, disfiguration, mutilation, urine, enemas, or feces. The term is gairaigo derived from the English phrase "erotic grotesque", and is frequently shortened to simply guro.

Examples of well-known guro artists include Waita Uziga and Toshio Maeda.

The modern genre of tentacle rape began within the category of ero-guro (although it has roots in older Japanese art), but was so successful that it is now usually considered separately.

A similar western example would be the snuff film. However, ero-guro is primarily drawn or animated, and does not involve the death or mutilation of real living humans.

Some more extreme examples of guro include images of people with their limbs removed, often through force; creative uses of chainsaws; and other violent imagery, including rape, dismembered persons packed in suitases, and death.