may refer to:
- Cathode Ray Tube , a common component of electronics such as televisions and other displays
- Cylinder (geometry) , a hollow shape
- Inner Tube , a component of vehicular tires
- Pneumatic Tube , a method of transportation utilising compressed air
- Test Tube , a piece of laboratory equipment used in science
- Tube , An expansion bus on the BBC Micro computer
- Tubing (material) , used in plumbing, irrigation, and other applications
- Vacuum Tube , a component of electronics
- Tube (structure) , the predominate structural system for constructing tall buildings in the United States between World War II and the 1990's.
- The Tube (TV Series) , a music related TV series by Channel 4 in the United Kingdom
- The Tubes , a San Francisco based rock group
- TUBE , a Japanese pop group
- Tube (game) , a freeware game from Bullfrog Productions , released in 1995
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- Tube , a children's programme with inflatable characters on SABC, South Africa
- Tube & Berger , the alias of Dance/Electronica producers Arndt Rörig and Marco Vidovic from Germany
- YouTube , a website that allows users to upload, view, and share video clips
- Peter 'Tubes' Dale , aka ''Tubes'' from the Soccer AM television show.
- Pornotube
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