LAWYER PROFILE
William Ong

William Ong

Asia-Pacific 2026

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Ranked in 1 practice area

About

Provided by Allen & Gledhill LLP

Practice Areas

Cybersecurity & Data Protection; International Arbitration; Litigation; Restructuring & Insolvency

Career

William is the Co-Head of the Litigation & Dispute Resolution Department. His areas of practice encompass international arbitration, banking litigation, corporate insolvency and restructuring as well as corporate litigation.

William has substantial experience in banking litigation, financial and securities-related disputes, and regularly acts in disputes involving structured products, margin trading, valuations, guarantees and enforcement of security. He is also actively involved in representing clients in corporate disputes, such as shareholder and directors’ disputes as well as joint venture disputes. William has special interest in the field of assessment of damages and valuation methodology, as he believes that most disputes would be ultimately concerned with damages and its assessment - he is familiar with the technical and legal aspects of this area which is valued by clients.

William joined the Firm in 2000 after he was called to the Singapore Bar and has been a Partner since 2006.

Professional Memberships

Fellow, Singapore Institute of Arbitrators.

Education

Graduated from the National University of Singapore with an LL.B. (Hons) degree in 1999.

Chambers Review

Provided by Chambers

Chambers Asia & Pacific

Dispute Resolution: Litigation - Singapore

Band 5
Band 5

Individual Editorial
William Ong is a well-regarded litigator in Singapore. He has a broad commercial dispute resolution practice encompassing banking and insolvency disputes.

Strengths

Provided by Chambers

  • He is a practical lawyer with an excellent client-focused approach.

    Dispute Resolution: LitigationChambers Asia & Pacific
  • His exceptional expertise, combined with his helpful and prompt approach, made him an invaluable resource. What struck us most was William's willingness to go above and beyond to provide support.

    Dispute Resolution: LitigationChambers Asia & Pacific

Ranked Individuals at Allen & Gledhill LLP (83)

Asia-Pacific Region

Myanmar

  • Profile image of Minn Naing Oo
    Minn Naing Oo

    General Business Law: International Firms

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Singapore

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