5 Largest Telecom Companies in The World by Revenue

4. AT&T Inc. (NYSE:T)

Revenue (TTM) as of September 30, 2023: $121.8 Billion 

With a trailing 12-month revenue of $121.8 billion as of September 30, 2023, AT&T Inc. (NYSE:T) ranks as one of the largest telecom companies in the world. The company offers a range of wireless voice and data communications services including handsets, wireless data cards, wireless computing devices, carrying cases, and hands-free devices to name a few. AT&T Inc. (NYSE:T) was founded in 1983 and has a market cap of $115.04 billion as of November 19, 2023.

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