PPK may refer to:
- Walther PPK, a handgun made popular by its use by the title character in the James Bond series of films
- PPK (group), a Russian trance group
- Punt, Pass, and Kick, a National Football League skills competition for youths aged 8–15.
- Ppk, a process performance index
- Parliamentary Party of Kosovo, a political party in Kosovo
- Pedro Pablo Kuczynski, a Peruvian economist
- Pay per click/Pay per keyword, in online marketing
- Public-private key, a form of Public-key cryptography
- Palmoplantar keratoderma, a condition involving hardened skin on the palm of the hand and/or sole of the foot
- ".ppk" PuTTY private key file format