Microsoft Windows is an operating system developed by Microsoft.

Windows may also refer to:

• The plural of window, an opening in an opaque surface through which light can pass

• X Window System, often erroneously referred to as X Windows, the basis for many graphical user interfaces on a variety of operating systems including many Unix and Linux variants
  • OpenWindows, the X Window System implementation for Solaris from 1989 to 2002
  • DECwindows, the X Window System implementation used by Digital Equipment Corporation
• Window (computing), a display rectangle used by a graphical user interface (GUI)
• Windows key, a key on computer keyboards

Film and television

• Windows (film), a 1980 erotic thriller.
• Windows (TV series), an American anthology series.

Music

• Windows (country-psych band), Los Angeles based band founded in 2018
• Windows (jazz band), a smooth jazz band (1984–1996)
• Windows (composition), a 1966 jazz standard by Chick Corea
• "Windows", a 1982 song on Vinyl Confessions by Kansas
• Windows (Jon Lord album), 1974
• Windows (Lee Konitz and Hal Galper album), 1975
• Windows (O'Donel Levy album), 1976
• Windows (Charlie Daniels album), 1982
• Windows (Amanda Somerville album), 2008

• Window (disambiguation)
• Windowing (disambiguation)
• Win-OS/2