Quat may refer to:
- Quaternary ammonium cations, known as quats
- Elizabeth Quat (born 1966), Hong Kong politician
- Phan Huy Quรกt, former prime minister of South Vietnam
See also
- All pages with titles beginning with Quat
- Qat (disambiguation)
- Quaternary (disambiguation)
- Quaternion, an extension of the complex numbers
- Khat, a flowering plant whose leaves are chewed as a stimulant
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