0K

0K (zero K) or 0-K may refer to:


 * 0k, an abbreviation for zero killed (used by bombers during World War II)
 * 0K, an abbreviation for the temperature zero Kelvin, or Absolute zero
 * 0K, an abbreviation for Zero knowledge in cryptology
 * Zero-knowledge proof
 * Non-interactive zero-knowledge proof
 * Zero-knowledge password proof
 * 0K, an abbreviation for zero keel, a type of Suspension keel
 * Zero-K, an open source real time strategy game
 * Zero K, a novel by Don DeLillo
 * Zero K, Music producer