Bonjour is a French word meaning (literally translated) "good day", and is commonly used as a greeting. It is the standard, polite way to acknowledge someone during the daytime hours.

Bonjour may also refer to:

People Laurence BonJour (born 1943), epistemologist and professor of philosophy at the University of Washington Martín Bonjour (born 1985), Argentine professional footballer Abel Bonjour, the Parisian cellist that the Bonjour Stradivarius was named after

Other Bonjour (software), an Apple computer program which implements Zeroconf, a service discovery protocol Bonjour Holdings, a Hong Kong–based retail company Bonjour Stradivarius, a cello named after Abel Bonjour Bonjour, a Weebl's cartoon about a French person Bonjour (album), an album by French-Algerian singer Rachid Taha Bonne Nuit, a 1999 made for TV horror movie starring Lucie Arnaz Bonjour, a character of one half of identical twin duo Bonjour and Au Revoir in Let's Go Luna!