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Altice USA, Inc., commonly known as Altice, is an American cable television provider with headquarters in New York City. It delivers pay television, Internet access, telephone services, and original television content to approximately 4.9 million residential and business customers in 21 states.

As a multiple-systems operator, the company operates the Optimum and Suddenlink brands, which it plans to rebrand under the Altice name. The company also provides international news through the February 2017 U.S. launch of i24NEWS and local news through News 12 Networks.

With its combined brands, Altice USA is the fourth-largest cable provider in the U.S., having customers residing in the New York City tri-state area, as well as several midwestern and southern states.

In November 2016, Altice USA announced a five-year plan for fiber-to-the-home to build a network capable of delivering 10 Gbit/s broadband speed. In August 2017, the company stated it was on track to reach one million homes by the end of 2018.

In June 2017, Altice USA raised US$2.2 billion in an initial public stock offering.

Altice USA is based at One Court Square in Long Island City, Queens with its operational center located at Cablevision's former headquarters in Bethpage, New York.