365

365 may refer to:
 * 365 (number), an integer
 * a common year, consisting of 365 calendar days
 * AD 365, a year of the Julian calendar
 * 365 BC, a year of the 4th century BC

Media outlets

 * 365 (media corporation), Icelandic TV company
 * 365 Media Group, UK sports betting company

Music

 * 365 (album), a 2012 album by Taiwanese Mandopop trio boyband JPM
 * "365" (Zedd and Katy Perry song)
 * "365" (Loona song)
 * "365", song by Amaranthe
 * "365", song by Charli XCX
 * "365", song by Nicole C. Mullen
 * "3.6.5", song by Exo
 * K.365, Concerto for 2 pianos & orchestra in E flat major ("Concerto No. 10"), K. 365 (K. 316a) by Wolfgang Amadeus Mozart
 * "365", a song by DJ Khaled featuring Kent Jones, Ace Hood and Vado, made for the soundtrack of NBA 2K16
 * 365, a song by Tiara Andini

Software

 * Microsoft 365, a line of subscription services for office software
 * Microsoft Dynamics 365, a product line of enterprise resource planning and customer relationship management
 * Windows 365, a cross-platform usage subscriptions to virtualized Windows desktops