PTK

PTK may refer to:


 * Pairwise Transient Key, a key in the IEEE 802.11i WPA2 specification
 * Phi Theta Kappa, an international honor society
 * Phototherapeutic keratectomy, laser eye surgery
 * Pilotiruemyi Transportny Korabl Novogo Pokoleniya (PTK NP, lit. "New Generation Piloted Transport Ship"), a Roscosmos program to develop a reusable spacecraft
 * Portal Three Kingdoms, a Magic: The Gathering card set
 * Post and Telecom of Kosovo
 * Protein Tyrosine Kinase, an enzyme
 * PTK Toolkit, a C++ toolkit for creating MacOS and Windows cross-platform games
 * Oakland County International Airport, a county-owned public-use airport located in Waterford, Michigan with IATA Code PTK
 * P, T and K, the most common voiceless plosive consonants across all languages