Separation may refer to:


  • Separation (1967 film), a British feature film written by and starring Jane Arden and directed by Jack Bond
  • La S├ęparation, 1994 French film
  • A Separation, 2011 Iranian film
  • Separation (2013 film), a 2013 American thriller film starring Sarah Manninen
  • Separation (upcoming film), an upcoming American horror film


  • The Separation (Priest novel), a 2002 novel by Christopher Priest
  • The Separation (Applegate ovel), a 1999 novel in the Animorphs series by K.A. Applegate
  • Separation, a 1976 Canadian political novel by Richard Rohmer


  • Separation (album), a 2011 album by American alternative rock band Balance and Composure
  • Separation (EP), a 2006 EP by Halou
  • Separates, album by 999
  • Separations (album), a 1992 album by British alternative rock band Pulp
  • Separation (band), a Swedish straight edge hardcore punk band
  • Separation mastering, in music recording

    Law and politics

  • Marital separation, when a married couple ceases living together without a divorce
  • Legal separation, a legal status where married couples may disentangle their finances without divorce
  • Nonconformity to the world (separation from the world), a belief among some Protestant religious groups that the members of a church should be separate from "the world"
  • Political separation (separatism), advocacy of a state of cultural, ethnic, tribal, religious, racial, governmental or gender separation from the larger group
  • Separation of church and state, the idea that religion and government functions should be separate

    Mathematics and science

  • Separation (behavior), the behavior of flocking animals to stand off from their neighbours
  • Separation (statistics), a problem encountered in fitting models for categorical outcomes
  • Flow separation, separation of a fluid boundary layer from the surface of a solid body moving relative to the fluid
  • Intertemporal portfolio choice#Time-independent decisions, where in some contexts portfolio choices for many periods can be made separately
  • Separated sets, related concept in topology, two sets disjoint from the other's closure
  • Separation axiom, concepts in the area of mathematics called topology
  • Separation of concerns, in computer science (and problem-solving in general)
  • Separation of variables, in mathematics to solve certain (separable) differential equations
  • Separation principle, in control theory
  • Separation process, in chemistry
  • Separation theorem (disambiguation): several different theorems related to separation, in different scientific disciplines, for example:
  • Mutual fund separation theorem, allowing a portfolio optimization problem to be separated into smaller problems

    Other uses

  • Separation (aeronautics), rules to minimise the risk of collision between aircraft in flight
  • Separation (United States military), the process by which a service member leaves active duty
  • Racial separation, the separation of different racial groups in daily life
  • Six degrees of separation, the idea that everyone is on average approximately six steps away, by way of introduction, from any other person on earth