Cellink is a cellular brand owned by Guyana Telephone and Telegraph Company (GT&T), a fixed Local Exchange Carrier (LEC) that provides landline and mobile services throughout the South American country of Guyana. Through the mobile brand Cellink, GT&T operates both TDMA and GSM mobile infrastructures, offering both postpaid and prepaid services at affordable rates.

GT&T's history in Guyana dates back to the late 1980's, when the Government of Guyana moved forward with the privatization of the country's telecommunications industry. As a result, Atlantic Tele-Network acquired 80% of the communications infrastructures of Guyana, while the remaining 20% remains under the government's ownership.

The acquisition and privatization of Guyana's communications sector resulted to the establishment of GT&T in 1991, commencing its initial operations in January. As of 2004, GT&T's total investment already reached US$195 million as the network continued to improve its overall communications infrastructures to remain competitive in the global market.

Today, Cellink, under which GT&T operates its wireless services, provides local mobile calling, international voice, SMS, and data services. Cellink also entitles its customers free GPRS mobile web browsing.

The Cellink logo and the Cellink product images are registered trademarks of Cellink.