Year One in political history usually refers to the institution of radical, revolutionary change.
Year One or Year 1 may also refer to:
- AD 1, a year
- 1 BC, a year
- Year 1 (education), an educational year group in schools
- Year One (film), a 2009 American adventure comedy
- Anno uno, a 1974 Italian biographical film released internationally as Year One
- , a DC Comics story arc
- , a 2011 animated film based on the story arc
- , another DC Comics story arc
- ', a 2003 DC Comics comic book miniseries
- ', a 2008 DC Comics two-part miniseries
- ', a 2007 DC Comics limited series
- Superman: Year One, a 2019 DC Comics limited series published under the DC Black Label
- Gotham City: Year One, a 2022 DC Comics limited series also published in the DC Black Label
- ', a 1999 American television series
- ', an adventure game under development
- Year One (album), 1969 album by rock group, The Golden Gate
See also