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Playfair may refer to:
- Playfair (surname)
- Playfair (lunar crater)
- Playfair (Martian crater)
- PlayFair, software that removes Apple's FairPlay DRM file encryption, now succeeded by Hymn
- Playfair Project
- TS Playfair, a Canadian sail training vessel
- Playfair cipher, a manual encryption technique invented in 1854 by Charles Wheatstone
- Playfair Cricket Annual
- Playfair Race Course
| disambiguation page lists articles associated with the title Playfair.
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