NSK may refer to:
Arts and media
- Neue Slowenische Kunst, a Slovenian art collective
- Japan Newspaper Publishers and Editors Association ()
- Japan Sumo Association ()
- N. S. Krishnan, Indian comedian in Tamil cinema
Places
- Alykel Airport, Siberia, Russia (IATA:<code>NSK</code>)
- National and University Library Zagreb, Croatia ()
- Niihau School of Kekaha, Hawaii, US
Other uses
- NSK Ltd., a Japanese bearing manufacturer
- NSK Trade City, a Malaysian grocery chain
- National Special Crime Unit (Denmark) ()
- Nuselský SK, a Czech football club
- Nasjonal Samling Kvinneorganisasjon, women's wing of the Norwegian Nazi party (1934–1945)