PT Indosat Tbk (known as Indosat Ooredoo Hutchison), is one of the leading providers of telecommunications services and telecommunications networks in Indonesia. This company offers communication channels for mobile phone users with a choice of prepaid and postpaid under the IM3 and 3 brands, other services provided are communication channels via voice for fixed telephones including international direct dialing IDD (International Direct Dialing). Indosat also provides multimedia, internet, and data communication services (MIDI = Multimedia, Internet & Data Communication Services).

In 2011, Indosat controlled a 21% market share. In 2013, Indosat had 58.5 million subscribers for mobile phones. In 2015, Indosat experienced an increase in the number of subscribers by 68.5 million subscribers with an increase of 24.7%, compared to the 2014 period of 54.9 million users.

In February 2013, the Qatari telecommunications company previously known as Qtel which controls 65 percent of Indosat's shares changed its name to Ooredoo and plans to replace all companies owned or under its control in Middle East Africa. and Southeast Asia with the name Ooredoo in 2013 or 2014 Two years later, on November 19, 2015, Indosat finally changed its identity and logo with the name Indosat Ooredoo.