Telecommunications companies established in 1981

Japanese company

British multinational telecommunications services company

South Korean telecommunication service provider

Singtel Optus Pty Limited is a major Australian telecommunications company headquartered in Macquarie Park, Sydney. Optus is the second-largest telecommunications company in Australia, with over 11 million customers as of 2023. Its mobile network covers 98.5% of the Australian population, with plans to cover all of Australia by 2026 through its partnership with SpaceX.

Comcast Cable Communications, doing business as Xfinity, is an American telecommunications business segment and division of Comcast Corporation. It is used to market consumer cable television, internet, telephone, and wireless services provided by the company. The brand was first introduced in 2010; prior to that, these services were marketed primarily under the Comcast name.

Bahrain Telecommunication Company BSC, trading as Batelco (), is the principal telecommunications company in Bahrain. The company's headquarters are in Hamala, Bahrain and the company is listed on the Bahrain Bourse. The Chairman of the Board is Abdulla Bin Khalifa Al Khalifa.

telecommunications company in Macau

Labtec Enterprises Inc. was an American manufacturer of computer accessories active as an independent company from 1980 to 2001. They were best known for their budget range of peripherals such as keyboards, mice, microphones, speakers and webcams. In the United States, the company had cornered the market for computer speakers and headphones for much of the 1990s before being acquired by Logitech in 2001.