Diem

Diem may refer to:

Latin phrases

• Carpe diem, a Latin phrase meaning "seize the day"
• Per diem, meaning "per day"
• 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