[4] The company also owns Café Amazon, a popular coffee chain throughout South East Asia, which shops are often located next to PTT gas stations or inside malls.

On 15 December 2022, the world's largest institutional investor the Norwegian Government Pension Fund Global divested from PTT and its subsidiary PTT Oil and Retail Business PCL (PTTOR) due to "unacceptable risk that the companies contribute to serious violations of individuals’ rights in situations of war or conflict".

[7][8] PTT was founded in 1978 (as Petroleum Authority of Thailand) as a state-owned enterprise, under Prime Minister Kriangsak Chamanan's government.

[13] In 2012, PTT Exploration and Production (PTTEP) took over Cove Energy plc, which owned an 8.5 percent share in a huge natural-gas field offshore Mozambique.

[16] Vencorex is a joint venture between PTT Global Chemical and the Perstorp Group, created in 2012, based in France's Rhône-Alpes region.

[21][22] PTT pays US$500 million per year to the state-owned Myanma Oil and Gas Enterprise (MOGE), directly benefiting the military junta, the State Administration Council since the 2021 Myanmar coup d'état.

[23] Human Rights Watch and other NGOs have called for PTT to end its business investments with Myanmar's military enterprises.

[31] PTT has many subsidiaries, including PTTGC, TOP, BCP, and PTTEP, all of which are working towards producing more environmentally friendly energy.

[37] In August 2014, PTT Global Chemical (PTTGC) along with Diary Home and NatureWorks, announced their eco-friendly Ingeo bioplastics yoghurt cup.