Telkomsel

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PT Telekomunikasi Selular

Current logo since 18 June 2021
Telkom Landmark Complex Building in Jakarta, Indonesia
Trade name	Telkomsel
Company type	Joint venture
Industry	Telecommunications
Founded	26 May 1995; 29 years ago (1995-05-26)
Founder	Telkom Indonesia
Headquarters	Telkom Landmark Complex, Jakarta, Indonesia
Key people	Wishnutama (President Commissioner) Hendri Mulya Syam (President Director)
Brands	Telkomsel Halo Telkomsel PraBayar Telkomsel Orbit Telkomsel Klop! by.U IndiHome Telkomsel One
Services	Prepaid Postpaid Landline telephony Wireless and fixed internet SMS
Owners	Telkom Indonesia (69.9%) Singtel (30.1%)
Website	www.telkomsel.com

PT Telekomunikasi Selular, trading as Telkomsel, is an Indonesian telecommunications company founded in 1995. Its ownership is divided between Telkom Indonesia (69.9%) and Singtel (30.1%), which serves as Telkom's consumer services arm starting 1 July 2023 by its management takeover of IndiHome.^[1] It is headquartered alongside Telkom in the Telkom Landmark Complex.

Telkomsel is the largest cellular telecommunication carrier in the country with 169.5 million customer base as of 2020.^[2] The company operates their GSM network on the 900–1800 MHz frequency range, as well as 3G, 4G, and 5G services on other frequencies. Telkomsel operates a variety of mobile services, chief among them are Telkomsel PraBayar (a consolidation of simPATI, kartuAs, and LOOP, all of them Telkomsel's prepaid services) and Telkomsel Halo (formerly kartuHalo). These brands differ on their payment model (prepaid vs. postpaid) as well as pricing. As of the first quarter of 2020, Telkomsel had a 66.4% share of the Indonesian mobile phone market.^[3]