# Flat

Flat or flats may refer to:

## Architecture

* Apartment, known as a flat in the United Kingdom, Ireland, and other Commonwealth countries

## Arts and entertainment

* Flat (music), a symbol (♭) which denotes a lower pitch
* Flat (soldier), a two-dimensional toy soldier made of tin or plastic
* Flat (theatre), a flat piece of theatrical scenery
* Flat, a leading type of wordplay, as identified by the National Puzzlers' League
* Flat! (2010), an Indian film
* Flats (band), an English band
* Flats (comics), the first stage in the comic coloring process

## Footwear

* Flats, footwear which is not high-heeled
* Ballet flats, derived from ballet shoes, for casual wear as well as dancing
* Ballet shoes (also known as ballet slippers), often referred to as "flats" or "flat shoes"
* Racing flats, lightweight shoes used primarily for running a race

## Geography
### Landforms

* Flat (landform), a relatively level area within a region of greater relief
* Mudflat, intertidal wetland with a substrate of fine sediments

### Bodies of water

* Flat, a shallow water area in the context of boating, fishing or marine biology, often used in plural form
** Brewster Flats, an area of Cape Cod Bay off the shore of Massachusetts, U.S.
** Kentish Flats Offshore Wind Farm, off the coast of Kent, England
** Rhyl Flats, a wind farm off the coast of North Wales
* Flat coast, a shoreline where the land descends gradually into the sea

### Places
#### United States

* Flat, Alaska, a census-designated place
* Flat, Kentucky, an unincorporated community
* Flat, Missouri, an unincorporated community
* Flat, Texas, an unincorporated community
* Flat Brook, a tributary of the Delaware River in Sussex County, New Jersey
* Flats, Nebraska, United States
* Flats, West Virginia, an unincorporated community
* Forest Lake Area Trail System, Missouri

#### Other

* Flat, Puy-de-Dôme, a commune in the French region of Auvergne
* Flat Island (disambiguation), in various places
* Flat Islands (disambiguation), in Canada and Antarctica
* Flat River (disambiguation), in the United States and Canada

## Mathematics and geometry

* Flat (geometry), the generalization of lines and planes in an n-dimensional Euclidean space
* Flat (matroids), a further generalization of flats from linear algebra to the context of matroids
* Flat module in ring theory
* Flat morphism in algebraic geometry
* Flat space, a space with zero curvature
* Flat sign, for its use in mathematics; see musical isomorphism, mapping vectors to covectors

## People
### Nickname

* Earl "Flat" Chase (1910–1954), Canadian baseball player
* Flat Walsh (1897–1959), Canadian ice hockey goaltender

### Fictional characters

* Flat Eric, a character in some Levi's commercials
* Flat Stanley, namesake of an American children's book series

### Groups

* FLATS or First Lady Astronaut Trainees, American women who underwent NASA Project Mercury physiological screening tests

## Other uses

* Flat (gridiron football), the area of the gridiron football field
* Flat butterflies or flats, certain skipper butterfly genera in subfamily Pyrginae:
** Calleagris (scarce flats),
** Celaenorrhinus of tribe Celaenorrhinini;
** Eagris, and
** Tagiades (water flats, snow flats), of tribe Tagiadini
* Flats (USPS), an oversized letter
* Optical flat, an extremely flat piece of glass