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!