Justin Tan is a partner in the Corporate & Securities practice in Mayer Brown’s Singapore office.

Justin’s practice comprises corporate, projects and sanctions work across the Asia Pacific and South Asian jurisdictions, with a strong focus on the energy, infrastructure, shipping and biomedical sectors. 

The clients include major multinational corporations in these sectors, top tier Japanese and other major international trading houses, Chinese SOEs and private enterprises in the energy and infrastructure sectors, and South East Asia-based conglomerates with regional and global operations.

He has over 20 years’ experience carrying out complex cross border M&A across Asia Pacific, as well as leading multi jurisdictional corporate restructuring exercises, particularly in the energy, infrastructure, shipping and biomedical sectors. 

He also has extensive experience carrying out greenfield/brownfield energy (especially LNG and renewables), chemicals, ports/terminals and other infrastructure projects all around the world, including Singapore, Malaysia, Indonesia, Vietnam, Laos, the Philippines, China, Brazil and the UAE. 

Given the sectors where the clients operate, geopolitical and regulatory considerations are paramount, and as their trusted adviser, Justin provides support at the boardroom level by advising on sanctions and trade regulatory issues, including supporting them with developing risk analysis, management and mitigation frameworks.

Justin is qualified to practice English and Singapore law, and speaks fluent English, Mandarin and Japanese.

Spoken Languages

  • English
  • Mandarin
  • Japanese



  • Advised one of the largest fully integrated energy companies in the world on a number of downstream oil and gas M&A transactions in APAC.
  • Advised Japan's largest trading company on its investment into a dry bulk ship pooling business headquartered in the US, involving entities across 9 jurisdictions.
  • Advised Japan’s largest trading company on its equity investment in an SPV to build, own and operate two LNG carriers in joint venture with one of Europe’s largest shipping companies.
  • Advised a top tier Japanese trading house on its LNG vessel pooling joint venture with one of the largest energy companies in the world.
  • Advised the trading division of one of Europe’s largest utilities on its joint venture with two of Japan’s largest utilities involving the injection of its coal trading business assets which includes coal mines in Australia and Indonesia, a coal terminal in Antwerp, Belgium and its portfolio of coal trading and freight contracts.
  • Advised a top tier Japanese trading house on its acquisition of an equity stake in aluminum concessions and smelters in East Malaysia.
  • Advised on a commercial joint venture in Indonesia entered into by a top tier Japanese trading house with an Indonesian distributor for the import of grains for downstream distribution in the Indonesian market.
  • Advised a number of international commodities trading houses on their vertical supply chain acquisitions including logistics, storage, transportation and processing assets.
  • Advised a Chinese state-owned petrochemical company on establishing a Singapore trading joint venture company with one of the largest private Chinese energy companies to conduct international oil trading business.
  • Advised on the SGD 151 million acquisition by an alternative investment management company into a premium residential estate in Singapore.
  • Advised INPEX Corporation on its equity investment in a joint venture with ADNOC and Intercontinental Exchange.

Projects & Infrastructure

  • Advised an American multinational manufacturer and marketer of chemical products on its joint venture for the USD 750 million expansion of an existing polyurethanes facility in the Shanghai Chemical Industrial Park.
  • Advised the Philippines PPP Center on the implementation of a major seaport project in the Philippines to support the region's potential to be the center of maritime activities in the Philippines, and as a transhipment hub for the Brunei Darussalam-Indonesia-Malaysia-Philippines East ASEAN Growth Area (BIMP-EAGA).
  • Advised a top tier Japanese trading house and its partners on their joint venture to build and operate a centralised utilities facility (supplying electricity, water, gas, hydrogen and wastewater treatment) to a refinery commissioned by Petrobras outside Rio de Janerio, Brazil on a BOT basis.
  • Advised on the investment by one of the largest solar companies in the world into a solar manufacturing and power project development joint venture in western China.
  • Advised the Taiwan Power Company on its proposed corporate restructuring and deregulation of the Taiwanese power sector pursuant to recent Taiwanese legislation prescribing the same.

Trade Sanctions and Regulatory Advice

  • Provided board room level strategic risk management and mitigation advice to one of the largest oil and gas services companies in the world in the context of the volatile geopolitical situation arising from US-China trade tensions.
  • Advised various ship charterers on the impact of US measures taken against shipowners.
  • Advised some of the largest energy and oil and gas services companies in the world on the impact of EU and US sanctions on Myanmar state entities.


National University of Singapore, Graduate Diploma, Singapore Law

University of Bristol, LLB
Second Upper Honours


  • England and Wales
  • Singapore


  • Member, Law Society of England and Wales, 2006-Present
  • Member, Law Society of Singapore, 2003 - Present
  • Member, Singapore Academy of Law, 2003 - Present