Flatiron or flat iron may refer to various things, often in the shape of a wedge:

Objects

Clothes iron A clothes iron (also flatiron, smoothing iron, dry iron, steam iron or simply iron) is a small appliance that, when heated, is used to press Clothing, clothes to remove Wrinkle, wrinkles and unwanted creases. Domestic irons generally range in o ...

Hair iron A hair iron or hair tong is a tool used to change the arrangement of the hair using heat. There are three general kinds: ''curling irons'', used to make the hair curl; ''straightening irons'', commonly called ''straighteners'' or ''flat irons'', ...

Places

Flatiron Building The Flatiron Building, originally the Fuller Building, is a 22-story, steel-framed triangular building at 175 Fifth Avenue in the Flatiron District neighborhood of Manhattan in New York City. Designed by Daniel Burnham and Frederick P. Dinke ...

, New York City, at the intersection of 5th & Broadway **

Flatiron District The Flatiron District is a neighborhood in the borough (New York City), borough of Manhattan of New York City, named after the Flatiron Building at 23rd Street (Manhattan), 23rd Street, Broadway (Manhattan), Broadway and Fifth Avenue. Generally ...

, New York City, named after the Flatiron Building * List of Flatiron buildings, including many similar buildings * Flat Iron, Indiana, a small community in Vermillion County * Flat Iron, Virginia *

Flatirons Community Church Flatirons Community Church is a large non-denominational church in Lafayette, Colorado, approximately 10 miles east of Boulder, Colorado, United States. History Flatirons Community Church was launched in July 1994 as Boulder Creek Community Chur ...

, a large non-denominational church in Lafayette, Colorado

Geology

Flatiron (geomorphology) Traditionally in geomorphology, a flatiron is a steeply sloping triangular landform created by the differential erosion of a steeply dipping, erosion-resistant layer of rock overlying softer strata. Flatirons have wide bases that form the bas ...

, a steeply sloping wedge shaped landscape feature **

Flatirons The Flatirons are rock formations in the western United States, near Boulder, Colorado, consisting of flatirons. There are five large, numbered Flatirons ranging from north to south (First through Fifth, respectively) along the east slope of ...

, rock formations near Boulder, Colorado **

Flatiron (volcano) The Flatiron is the name for an eroded volcanic outcrop in east-central British Columbia, Canada, located in Wells Gray Provincial Park.The Flatiron Granite Harbour () is a bay in the coast of Victoria Land, Antarctica, about long, entered between Cape Archer and Cape Roberts. It was discovered and named by the British National Antarctic Expedition (BrNAE) of 1901–04 in the ''RRS Discover ...

, a headland overlooking Granite Harbour, Victoria Land, Antarctica

Other

* ''The Flatiron'' (photograph), a 1904 photograph by Edward Steichen *Flatiron Books, a division of

Macmillan Publishers Macmillan Publishers (occasionally known as the Macmillan Group; formally Macmillan Publishers Ltd in the United Kingdom and Macmillan Publishing Group, LLC in the United States) is a British publishing company traditionally considered to be on ...

Flat Iron Competitor for Canada Flat Iron was a First Nations lacrosse player who competed in the 1904 Summer Olympics for Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territ ...

, a First Nations lacrosse player who competed in the 1904 Summer Olympics for Canada * Flat-iron gunboat, a 19th-century iron gunboat typified by a single large gun fitted in the bow *

Flatiron (ship) A flatiron, or flattie, is a type of coastal trading vessel designed to pass under bridges that have limited clearance. Her mast(s) are hinged or telescopic, her funnel may be hinged, and her Bridge (nautical), wheelhouse may also fold flat. ...

, a type of British ship for passing under low bridges *

Flat iron steak Flat iron steak (US), butlers' steak (UK), feather steak (UK) or oyster blade steak (Australia and New Zealand) is a cut of steak cut with the grain from the chuck, or shoulder of the animal. Origin The origin of flat iron steak began with the ...

, a cut of beef *

Flatiron Construction Flatiron Construction Corporation, a subsidiary of Hochtief, is a heavy civil infrastructure contractor headquartered in Broomfield, Colorado, United States. Flatiron builds infrastructure such as bridges, highways, railways, roads, tunnels, hyd ...

, a civil infrastructure construction firm {{disambiguation, geo