Crypto

Crypto or Krypto may refer to:

Cryptography and cryptanalysis

Cryptography, the practice and study of hiding information
Cryptanalysis, the study of methods for obtaining the meaning of encrypted information
CRYPTO (conference), an annual cryptographical and cryptoanalytic conference
Crypto++, a free, open source library of cryptographic algorithms and schemes
Crypto: How the Code Rebels Beat the Government—Saving Privacy in the Digital Age, a book about cryptography by Steven Levy
Crypto AG, a Swiss manufacturer of encrypted communications products
Cryptocurrency, digital currency that uses cryptography to secure transactions

Cryptococcus, a genus of fungus that can cause lung disease, meningitis, and other illnesses in humans and animals
- Cryptococcosis, also called cryptococcal disease, caused by Cryptococcus
Cryptosporidium, a protozoan that can cause gastro-intestinal illness with diarrhea in humans
- Cryptosporidiosis, a parasitic intestinal disease in mammals, caused by Cryptosporidium

Krypto, Superman's pet dog in the popular comic, cartoon, and movie series
- Krypto the Superdog, an animated series featuring Krypto
Kryptonite, a fictional mineral in the Superman series

Cryptosporidium (Destroy All Humans!), a protagonist in the Destroy All Humans! video game series
Krypto (game), a mathematical strategy card game