Cline
# Cline

Cline may refer to:

## Science

* Cline (biology), a measurable gradient in a single trait in a species across its geographical range
* Cline (hydrology), a fluid layer with a property that varies
* Cline (mathematics) or generalised circle, a circle or straight line in inverse geometry
* Cline of instantiation, a concept in systemic functional linguistics

## Other

* Cline (fish) (Clinitrachus argentatus), a shallow water fish
* Cline (surname), a given name and a family name (including a list of persons with the name)
* Cline River, in Alberta, Canada
* Cline, Texas in Uvalde County, Texas
* Cline Avenue, a road in Indiana, US
* Antonov An-32, a military transport aircraft, whose NATO reporting name is "Cline"
