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Private company

TOT

Logo: TOT, Public domain, via Wikimedia Commons3

Thai telecommunications company

TOT Public Company Limited (Thai: บริษัท ทีโอที จำกัด (มหาชน) or ทีโอที) is a Thai state-owned telecommunications company. Originally established in 1954 and corporatized in 2002, TOT used to be known as the Telephone Organization of Thailand (Thai: องค์การโทรศัพท์แห่งประเทศไทย, romanized: Ongkan thorasap haeng prathet Thai) and TOT Corporation Public Company Limited. TOT's main line of business is fixed line telephony, internet, although it has several other businesses, including mobile telephony.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Feb 24, 1954Founded1
  • Industrymobile phone industry, telecommunications industry1
  • HeadquartersBangkok1
  • Websitewww.tot.co.th
  • Legal formpublic limited company, state-owned enterprise1

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TOT-HQ
Photo: Alrathai, CC BY-SA 4.0, via Wikimedia Commons5

TOT Public Company Limited (Thai: บริษัท ทีโอที จำกัด (มหาชน) or ทีโอที) is a Thai state-owned telecommunications company. Originally established in 1954 and corporatized in 2002, TOT used to be known as the Telephone Organization of Thailand (Thai: องค์การโทรศัพท์แห่งประเทศไทย, romanized: Ongkan thorasap haeng prathet Thai) and TOT Corporation Public Company Limited. TOT's main line of business is fixed line telephony, internet, although it has several other businesses, including mobile telephony. Since 2021, TOT PCL become National Telecom Public Company Limited after merger with CAT Telecom.2

The story

The first use of the telephone in Thailand began during the reign of King Rama V in 1881 with a telephone line constructed between Bangkok, and Paknam, in Samut Prakan, a short distance south of Bangkok along the Chao Phraya River. Its purpose was to inform Bangkok of the arrival and departure of ships at Paknam.

The Telephone Organization of Thailand was founded by the Thai government on 24 February 1954. A state enterprise under the Ministry of Transport and Communications, it incorporated the Telephone Technician Unit under the Post and Telegraph Department. It originally had 732 staff members and a budget of 50 million baht. The TOT provided telephone services in the Bangkok metropolis, which included Wat Lieb, Bang Rak, Ploenchit, and Sam Sen Exchanges.

TOT was transformed from a state-owned enterprise under the control of the Transport and Communication Ministry to a public company named TOT Corporation PCL. on 31 July 2002.

From Wikipedia’s article on TOT Public Company Limited, shared under CC BY-SA 4.0.4

Products and brands

  • mobile phone

Listed on Wikidata.1

TOT is also a host network operator, who hosts Mobile virtual network operator (MVNOs).

As of January 2017, TOT had two MVNOs operating on its network:

i-Kool 3G (Loxley)

IEC3G - Renamed to Tron IEC3G As of 25 March 2014

Read the full text

By the end of 2016 the MVNO's and TOT itself, had a combined market share of 0.18% representing 163,658 subscribers out of a total market size of 90,921,572.

In January 2017, TOT's financial statement reported total revenue of THB 30.8 billion in 2016, Ebitda of THB 1.6 billion, and a Net Loss of THB 5.8 billion.

From Wikipedia’s article on TOT Public Company Limited, shared under CC BY-SA 4.0.4

Timeline

  1. Feb 24, 1954Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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