title: QSD
text: # QSD
  
  QSD may refer to:
  
  * Q_code, "Is my keying defective?" / "Are my signals mutilated?"
  * Quality spread differential, a concept in finance
  * Quadrilateral Security Dialogue, a strategic dialogue
  * Quick Step–Davitamon, UCI cycling team (2003–04)
  * Syrian Democratic Forces (Quwwāt Sūriyā al-Dīmuqrāṭīya)
  