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 counted among Singapore's Big Four alongside Rajah & Tann, WongPartnership, and Drew & Napier. Through the 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.

Court records show Allen & Gledhill appearing in 55 cases before Singapore courts between January 2025 and May 2026, with its busiest practice areas being civil procedure (25 cases), contract (22), and tort (15), followed by insolvency law (10), arbitration (7), and companies (7). The bulk of hearings took place in the High Court General Division (33 cases) and the Singapore International Commercial Court (9), with the Court of Appeal adding a further 8 appearances — a distribution that underscores the firm's strength in both domestic and cross-border commercial disputes. More than 100 lawyers from the firm appeared across these proceedings; the most active was William Ong Boon Hwee with 40 case appearances, followed by Thomas Benjamin Lawrence (24), Tan Yen Jee and KarLuis Quek (18 each), and Kenneth Wang Ye (16).

The firm's recognition spans multiple rankings 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 singled it out 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. 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 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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