The Giant Japanese funnel-web spider, known formally as Macrothele gigas, is a species of funnel-web spider in the family Macrothelidae.

[1] It is one of the largest funnel-web spiders in the world, and is highly venomous.

[2] Members of the species are typically black with red fangs protruding from the mouth.

When fully grown, spiders in the species can grow to have a leg span of ~6 inches (15 cm), making them one of the largest funnel web spider species in the world.

The spider is extremely venomous, and typical symptoms after a bite can include unnatural amounts of perspiration, goose bumps, hypertension and tachycardia.