Separator

Separator can refer to:
 * A mechanical device to separate fluids and solids, like
 * Cream separator, separates cream from milk
 * Demister (vapor), removal of liquid droplets entrained in a vapor stream
 * Separator (oil production), of an oil production plant
 * Vapor–liquid separator, separates a vapor–liquid mixture
 * a machine used to produce mechanically separated meat
 * The historic Swedish company name AB Separator, common ancestor of Alfa Laval and DeLaval
 * Air classifier, a mechanical device to separate components of air
 * Community separator, a term of urban planning
 * Separator (electricity), a porous or ion-conducting barrier used to separate anode and cathode in electrochemical systems, also known as diaphragm
 * Planar separator theorem, a theorem in graph theory
 * Vertex separator, a notion in graph theory
 * Geometric separator, a line that separates a set of geometric shapes to two subsets
 * A synonym for "generator" in category theory
 * A mathematical sign used to separate the integer part from the fractional part of a number. For example, the decimal point and the binary point
 * A synonym for "delimiter" in computer parlance
 * Orthodontic spacer, also known as orthodontic separators
 * Four of the C0 and C1 control codes used in digital character encoding
 * A song by Radiohead, off the 2011 album The King of Limbs
 * In computing, a Printer separator to flag the start and end of jobs on a printer