List of telecommunications companies

This list identifies the largest telecommunications companies by total revenue. For a more thorough list, see the [|By region] section.

By total revenue

''Note: Numbers of total revenues of most telephone operating companies are sourced from Forbes or MarketScreener. When $USD revenues unavailable from reliable sites, currency conversions for 2019-2022 revenues are based on the closing currency exchange rate on the last day of 2019-2022.''

By region