PMAC may refer to:
- PMAC (cryptography)
- Pete Maravich Assembly Center
- Portsmouth Music and Arts Center
- Provisional Military Administrative Council, also known as the Derg
- PMAC Phu My Architecture Co.,Ltd (Vietnam)
- Pmac, a rapper
PMAC, which stands for Parallelizable MAC, is a message authentication code algorithm. It was created by Phillip Rogaway (patent pending).
PMAC is a method of taking a block cipher and creating an efficient message authentication code that is provably reducible in security to the underlying block cipher.
PMAC is similar in functionality to the OMAC algorithm.