Big Duck

	The Big Duck
	U.S. National Register of Historic Places
	The Big Duck was constructed in the 1930s to help its owner's duck farming business.
	Interactive map showing the Big Duck’s location
Location	Flanders, New York
Coordinates	40°54′25.9″N 72°37′20.6″W / 40.907194°N 72.622389°W
Built	1931
Architectural style	Novelty architecture
Website	bigduck.org
NRHP reference No.	97000164
Added to NRHP	April 28, 1997

The Big Duck is a ferrocement building in the shape of a duck. Located in Flanders, New York, the building was originally constructed in Riverhead, and has been moved several times to various locations on eastern Long Island. The building is well known for its distinctive appearance, and it inspired the word "duck" to be commonly used in academic literature to refer to either buildings shaped like everyday objects or excessive ornamentation used in graphical presentations of data.

It was originally built in 1931 by duck farmer Martin Maurer and used as a shop to sell ducks and duck eggs. It was added to the National Register of Historic Places in 1997. It is a principal building on the Big Duck Ranch, listed on the National Register of Historic Places in 2008.