The State Cryptography Administration (SCA) is an institution of the State Council of China that is responsible for cryptography.

It is under the Chinese Communist Party's Central Cryptography Leading Group.

Under the "one institution with two names" arrangement, it is also the Office of the Central Cryptography Leading Group under the General Office of the CCP Central Committee.

The SCA was established on 25 March 2005.

It implements CCP and State policies in regard to cryptography, proposes suggestions about cryptography work, investigates illegal development and use of cryptography, is responsible for cryptographic work relating to foreign entities, develops plans on cryptographic work, drafts and is responsible for the implementation of cryptographic work regulations, is responsible for managing cryptography research, production, sales, evaluation, and application, plans and manages of cryptographic systems in China, and guides professional cryptography education.