Other
- Clair (Hampshire cricketer), English professional cricketer
- René Clair, French film-maker.
- Claire Redfield, a player character appearing in the Resident Evil series of survival horror video games
- Claire Bennet, a fictional character in the NBC science fiction drama series Heroes
- Clair Huxtable, a fiction character in the NBC series The Cosby Show
- "Clair" (song), a 1972 hit for Gilbert O'Sullivan
- Au clair de la lune, a classic French children's song
- Claire (film), a 2001 fantasy film
- Claire (programming language), an object-oriented programming language
- Claire's, a female accessory store
- "Planet Claire", a 1980 song by The B-52's
- Council of Local Authorities for International Relations (CLAIR), a Japanese governmental agency
- Claire (2007 film), a film written by Drew Seeley
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