{{wiktionary|Diem|diem}} '''Diem''' may refer to:
==Latin phrases== *{{lang|la|Carpe diem}}, a Latin phrase meaning "seize the day" *{{lang|la|Per diem}}, meaning "per day" *{{lang|la|De die in diem}}, a legal term meaning "from day to day"
==People== ===Given name=== *Diem Brown (1980–2014), American television personality and journalist *Ngo Dinh Diem (1901–1963), Vietnamese leader assassinated in a military coup *Diem Saunders (1991/1992–2021), Inuk writer and activist from Canada ===Surname=== *Carl Diem (1882–1962), originator of the Olympic torch relay *Ryan Diem (born 1979), American football player
==Other uses== *Diem (digital currency) (2019-2022), a digital currency formerly proposed by Facebook *DiEM25, Democracy in Europe Movement 2025 *Diem or Didam, a town in the Netherlands
{{Disambiguation|given name|surname}} Category:Surnames derived from given names