Allen & Gledhill LLP

About Allen & Gledhill LLP

Allen & Gledhill LLP is a full-service Singapore law firm founded in 1902 by Rowland Allen and Joseph Gledhill, making it one of the country's oldest and largest practices. Headquartered at One Marina Boulevard in Singapore, the firm is widely regarded as part of Singapore's Big Four. Through its A&G Asia regional network, which spans Singapore, Malaysia (Rahmat Lim & Partners), Myanmar, Indonesia (AGI Legal), Vietnam, and China, the firm fields more than 650 lawyers across six countries, and it carries the LSRA classification of a large Singapore law practice with more than 30 lawyers.

Court records show Allen & Gledhill appearing in 100 cases before Singapore courts between January 2024 and May 2026. Its busiest practice areas by case volume were civil procedure (46 cases), contract (28), and insolvency law (28), followed by tort (19), legal profession matters (12), companies (10), and seven cases each in damages and arbitration. The largest concentration of hearings took place in the High Court General Division (62 cases) and the Singapore International Commercial Court (17), with the Court of Appeal adding a further 10 appearances — a distribution that reflects the firm's involvement in both domestic and cross-border commercial disputes. The most frequently appearing lawyer in these records was William Ong Boon Hwee, alongside others including Thomas Benjamin Lawrence, KarLuis Quek, Kay Tan Jia Xian, Wong Pei Ting, and Kenneth Wang Ye.

The firm's recognition spans multiple ranking bodies. Asian Legal Business named Allen & Gledhill Singapore Law Firm of the Year (2024) and SE Asia Law Firm of the Year (2024), and also recognised it for Banking and Financial Services, Real Estate, and Restructuring in Southeast Asia that year. Legal 500 awarded it Singapore Firm of the Year (2023) and places it at Tier 1 for Banking and Finance, Corporate and M&A, Capital Markets, Intellectual Property, Restructuring and Insolvency, Dispute Resolution, and Arbitration in its 2026 rankings. IFLR has recognised the firm as National Law Firm of the Year (Singapore) on 24 occasions since 2000 and as Asia-Pacific Regional Law Firm of the Year in 2022, and Asia Business Law Journal included 16 of its lawyers in the 2026 A-List. The firm is led by Managing Partner Jerry Koh and Chairman and Senior Partner Christina Ong, with practice heads including Margaret Chin (Capital Markets), Kok Chee Wai (Banking & Finance and Energy, Infrastructure & Projects), Daren Shiau (Competition & Foreign Investment Review), and Dr Stanley Lai SC (Cybersecurity & Data Protection).

The firm's alumni include Attorney-General Lucien Wong, Minister for Home Affairs and Law K. Shanmugam, Minister for Community, Culture, and Youth Edwin Tong, Supreme Court Judge Ang Cheng Hock (appointed 2018), and former judge Lai Siu Chiu, the first woman appointed to the Singapore judiciary. Its competition practice is described as the largest fully dedicated competition team in Singapore and has advised on approximately 75 percent of merger control filings with the CCCS.

Allen & Gledhill LLP is part of A&G Asia — Regional law network spanning six countries in Asia, with over 650 lawyers working on cross-border transactions. Includes associate firms in Malaysia and Indonesia..

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