AT&T Mobility (NYSE:T) is the wireless subsidiary of AT&T and is headquartered near Atlanta. It is the second largest wireless telecommunications provider in the U.S., with over 107.3 million subscribers at the end of first quarter of 2013. AT&T Mobility's current CEO is Ralph de la Vega.

AT&T was originally Cingular Wireless from 200 to 2007 and in 2007 rebranded itself as AT&T. AT&T Mobility was the first carrier to sell the Apple iPhone, and sold it exclusively from its release in July 2008 until February 2011. In March 2011, AT&T Mobility attempted to acquire T-Mobile USA from Deutsche Telekom for $39 billion; however the deal eventually fell through.