Anthrax is an infectious disease in herbivorous animals and, less frequently, humans.

Anthrax can also mean:

• Bacillus anthracis, the bacterium responsible for anthrax, the disease
• Anthrax (US band), an American heavy metal band
• Anthrax (fly), a genus of bombyliid flies
• Anthrax (UK band), a British anarcho-punk band
• Castle Anthrax, a fictional fortress in the movie Monty Python and the Holy Grail

Anthrax | Anthrax