NY most commonly refers to:
Nymphomaniac (stylised as NYMPH()MANIAC onscreen and in advertising) is a 2013 European two-part art film written and directed by Lars von Trier.
Nylon is a generic designation for a family of synthetic polymers, based on aliphatic or semi-aromatic polyamides.
In the field of digital signal processing, the sampling theorem is a fundamental bridge between continuous-time signals (often called "analog signals") and discrete-time signals (often called "digital signals").
Nystagmus is a condition of involuntary (or voluntary, in rare cases) eye movement, acquired in infancy or later in life, that may result in reduced or limited vision.
Nynorsk (translates to New Norwegian) is one of the two written standards of the Norwegian language, the other being Bokmål.
NYPD Blue is an American police procedural drama television series set in New York City, exploring the struggles of the fictional 15th Precinct detective squad in Manhattan.
Nyasaland () was a British Protectorate located in Africa that was established in 1907 when the former British Central Africa Protectorate changed its name.
NYC Ferry is a network of ferry routes in New York City operated by Hornblower Cruises. As of August 2018, there are six routes connecting 21 ferry piers in the Bronx, Brooklyn, Manhattan, and Queens.