NonStop is a series of server computers introduced to market in 1976, beginning with the Tandem NonStop product line, which was followed by the HP Integrity NonStop product line extension. Because NonStop systems are based on an integrated hardware/software stack, HP also developed a special operating system for them:  NonStop OS.

Nonstop or non-stop may refer to:

• Cozi TV, a network of digital subchannels on NBC's owned-and-operated television stations formerly known as NBC Nonstop
• Non-Stop (film), a 2014 film
• Non-Stop (2013 film), a 2013 made-for-TV film starring Lacey Chabert
• Non-stop flight, an airplane flight with no intermediate stops
• Nonstop (band), a Portuguese girl band
• Nonstop (dancer), a YouTube dancer
• NonStop, a fault-tolerant computer architecture by Tandem Computers (later Compaq, now Hewlett-Packard)
• NonStop SQL, relational database software by Tandem Computers (later Compaq, now Hewlett-Packard)
• UnixWare NonStop Clusters, a fault tolerant computer system sold by SCO
• Non-stop decay, cellular mechanism to prevent translation of mRNA molecules lacking a stop codon
• Non-Stop (novel), a 1958 science fiction novel by Brian Aldiss
• Nonstop (TV series), a Korean melodrama
• Nonstop (Chinese TV series), a 2009 Chinese TV series
• NonStop (Fun Factory album), a 1995 album by Fun Factory
• Non-Stop (Andy Bell album), 2010
• Non-Stop (BT Express album), 1975
• XXV Nonstop, a 2011 album by Sick of It All
• NBC Nonstop, a network of digital subchannels on NBC's owned-and-operated television stations
• 24/7, a service available at all times
• Nonstop (album), a 2008 album by Vocal Point

Nonstop! is the 54th studio album by American musician James Brown. The album was released in April 1981, by Polydor Records.