Nielsen

• Nielsen Gallery, an American commercial art gallery • Nielsen Holdings, global information, data, and measurement company • Nielsen Corporation, a marketing research firm • Nielsen Audio, formerly Arbitron, which measures radio listenership • Nielsen Broadcast Data Systems, a service also known as BDS that tracks monitored radio, television, and internet airplay of songs • Nielsen Media Research, the company that creates the Nielsen ratings • Nielsen ratings, a rating system used to gauge audience measurement of television programming habits in the United States • Nielsen Norman Group, a computer user interface and user experience consulting firm ==Other uses==

• Nielsen (surname), including a list of people • Nielsen (crater), a lunar impact crater on the Oceanus Procellarum • Nielsen–Olesen vortex, a point-like object localized in two spatial dimensions or a classical solution of field theory with the same property • Nielsen fixed-point theorem • Nielsen Fjord • Nielsen Glacier • Nielsen Park She-Oak ==See also==