Taq or TAQ may refer to:
- Taq, Iran, a village in Semnan Province, Iran
- Taq polymerase, a heat-stable enzyme used in polymerase chain reaction, or Thermus aquaticus, the species of bacteria from which the polymerase is naturally derived
- The artist Taku Sakakibara, better known as TaQ
- Trade and Quote (TAQ), databases on the New York Stock Exchange and NASDAQ
- The African Queen (film)
- Terminus ante quem, the latest possible date for a specific event
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