Thisbook constitutes the refereed proceedings of the 7th International Workshop onPost-Quantum Cryptography, PQCrypto 2016, held in Fukuoka, Japan, in February2016.The 16 revised full papers presented were carefully reviewed and selectedfrom 42 submissions. The papers cover all technical aspects of multivariate polynomial cryptography, code-basedcryptography, lattice-based cryptography, quantum algorithms, post-quantumprotocols, and implementations.