Tata Communications Limited is an Indian telecommunications company previously known as Videsh Sanchar Nigam Limited (VSNL). It was previously a government- owned-telecommunications service provider and under the ownership of Department of Telecommunications, Ministry of Communications, Government of India. It was sold by Department of Telecommunications, Ministry of Communications, Government of India to Tata Group when Atal Bihari Vajpayee-Bharatiya Janta Party-National Democratic Alliance was in power . Presently the company is part of the Tata Group.

Tata's communications network spans more than 500,000 kilometres (310,000 mi) of subsea fibre and more than 210,000 kilometres (130,000 mi) of terrestrial fibre. The company has invested $1.19 billion in its global subsea fibre network. It provides network services and software-defined network platforms, such as Ethernet, SD-WAN, content delivery networks (CDNs), the internet, Multiprotocol Label Switching (MPLS), and private lines. It has more than 400 points of presence (PoPs) with a data centre, Cloud (Private Cloud and Puiblic Cloud Management) and co-location in 44 sites.

It is listed on the Bombay Stock Exchange and the National Stock Exchange of India. It also holds a stake on its Sri Lankan subsidiaries, Tata Communications Lanka.

The company is listed as one of AON Hewitt's Best Employers in India for 2017.