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QFT may stand for:

  • Quantum field theory, the theory of quantum mechanics applied to fields
  • Quantum Fourier transform, a Fourier transform acting on quantum bits
  • Quadratic Frobenius test, a primality test
  • QuantiFERON, a test for tuberculosis infection or latent tuberculosis
  • Quantitative feedback theory
  • Queen's Film Theatre, a cinema in Northern Ireland
  • Quoted for Truth, internet slang when a person strongly agrees with another