Year 800 was a leap year starting on Wednesday of the Julian calendar.

800 may also refer to:

• 800 (number), the number
• 800 BC, a year
• The original toll-free area code for telephone calls in the North American Numbering Plan and some other countries
• The international direct dial code for toll-free international phone calls
• ISO 800, a common film speed for photographic films
• 800 AM, an AM radio station frequency
• TWA Flight 800, the flight number of an airplane disaster
• The Atari 800 home computer
• A perfect score on an individual section of the SAT test or on one of the SAT Subject Tests
• 800 metres, the name and distance in metres of an athletic event
• Hawker 800, a British aircraft
• Rover 800, a British automobile
• "800", a song by Saliva from their album Saliva (album)
• Nokia Lumia 800, a smartphone running Windows Phone operating system

• List of highways numbered 800
• The Eight Hundred

This disambiguation page lists articles associated with the same number.
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