123
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123 may refer to:
- The first three positive Arabic numerals
- 123 (number), the natural number following 122 and preceding 124
- AD 123, a year of the Julian calendar, in the second century AD
- 123 BC, a year of the pre-Julian Roman calendar
- 123 Brunhild, a main-belt asteroid
Entertainment
- 123 (film), a 2002 Indian romantic comedy
- 123, 2016 Philippines film by Carlo Obispo at 12th Cinemalaya Independent Film Festival
- "123" (Nikki Laoye song), 2012
- "123" (Smokepurpp and Murda Beatz song), 2018
- "123", a song by Jess Glynne from the 2018 album Always In Between
Other
- 123 (file format), used by the Lotus 1-2-3 spreadsheet program
- IRT Seventh Avenue Line, served by the 1, 2, 3 New York Subway services
- 123 (interbank network), a shared cash network in Egypt
- Japan Air Lines Flight 123, which crashed in 1985 near Tokyo
See also
- 1-2-3 (disambiguation)
- 12/3 (disambiguation)
- A123 (disambiguation)
- Ek Do Teen (disambiguation) ({{lit|One Two Three}}), in Indian cinema
- The Taking of Pelham One Two Three (disambiguation)
- Unbitrium, a hypothetical chemical element with atomic number 123
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