ZK

ZK may refer to:

Arts and entertainment

 * ZK (rapper), Danish rapper and singer
 * Zero-K, a 2010 real-time strategy game
 * ZK, alleged publisher of Sad Satan
 * ZK, Australian duo comprising Zaachariaha Fielding and Kristal West in 2014

Aviation

 * Great Lakes Airlines (IATA designator: ZK)
 * ZK, the aircraft registration prefix for New Zealand

Politics

 * Zentralkomitee, Socialist Unity Party of Germany's executive body

Science and technology

 * Zero knowledge (disambiguation), various concepts in cryptographic proof
 * Zettakelvin, an SI unit of temperature
 * ZK (framework), an AJAX web framework for graphical UIs