White box may refer to:

• White box (software engineering), a subsystem whose internals can be viewed
  • White-box testing, in software testing
• White box (computer hardware), a personal computer assembled from off-the-shelf parts
• White-box cryptography, a cryptographic system designed to be secure even when its internals are viewed
• Whitebox Geospatial Analysis Tools, a GIS & remote sensing software package
• White box system, a bilge water monitoring and control system for ships

• WHITEbox, an album set by Sunn O)))
• "White Box", a special Christmas episode in Series 5 of Absolutely Fabulous
• "White box", a release of the original Dungeons & Dragons rules
• The White Box, a set of books about tabletop game design by Jeremy Holcomb and Jeff Tidball
• Shirobako (lit. White Box), an anime television series produced by P.A.Works
• WhiteBox (art center), an arts center in New York City, US

• Eucalyptus albens or white box, a tree species from Australia

• Black box (disambiguation)
• Grey box (disambiguation)
• White cube gallery
• White goods