QSD
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Look up QSD in Wiktionary, the free dictionary.
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)