Blu or BLU may refer to:
Blu-ray or Blu-ray Disc (BD) is a digital optical disc data storage format. It was designed to supersede the DVD format, in that it is capable of storing high-definition (720p and 1080p) and ultra high-definition video resolution (2160p).
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs).
Blue Is the Warmest Colour (French: La Vie d'Adèle – Chapitres 1 & 2 – "The Life of Adèle – Chapters 1 & 2") is a 2013 French coming-of-age romantic drama film written, produced, and directed by Abdellatif Kechiche, starring Adèle Exarchopoulos and Léa Seydoux.
Blue is the colour between violet and green on the optical spectrum of visible light. Human eyes perceive blue when observing light with a wavelength between 450 and 495 nanometres, which is between 4500 and 4950 ångströms.
Blue Öyster Cult (often abbreviated BÖC) is an American rock band formed in Long Island, New York in 1967, whose most successful work includes the hard rock and heavy metal songs "(Don't Fear) The Reaper", "Godzilla" and "Burnin' for You".
Blue Peter is a British children's television programme, shown currently live on the CBBC television channel.
"Blurred Lines" is a single written and performed by American recording artists Robin Thicke, T.I., and Pharrell Williams.
Blue Ridge High School is a small, rural public high school located in New Milford , Susquehanna County, Pennsylvania.
Blue Origin is an American privately-funded aerospace manufacturer and spaceflight services company set up by Amazon.com founder Jeff Bezos with its headquarters in Kent, Washington.