James G. Onder

James G. Onder is a nationally recognized trial attorney with decades of experience in personal injury and mass tort litigation. He is widely respected for holding major corporations accountable and fighting for victims harmed by dangerous products. Throughout his legal career, Mr. Onder has secured more than $5 billion in verdicts and settlements for clients. His strategic leadership in high-stakes cases has set national precedents and driven major changes in corporate practices.

Mr. Onder earned his J.D. from Saint Louis University School of Law. He graduated from Washington University School of Business.

Mr. Onder has built a reputation as a powerful advocate in mass tort and product liability cases. He was one of the earliest attorneys to file talcum powder-related ovarian cancer lawsuits, helping spark what became one of the largest litigations of its kind in U.S. history. His work has helped more than 20,000 individuals affected by talc-related cancers, resulting in a groundbreaking $8.9 billion resolution with Johnson & Johnson.

In addition to talc cases, Mr. Onder has served in leadership roles in litigations involving glyphosate, birth control drugs, antidepressants, and more. His contributions include national co-lead counsel positions, committee leadership in federal MDLs, and representation in large-scale class actions and bankruptcy proceedings. These efforts have brought justice to tens of thousands of people harmed by corporate negligence.

Mr. Onder has received numerous professional honors, including Super Lawyers recognition, a Martindale-Hubbell AV rating, and lifetime membership in the Multi-Million Dollar Advocates Forum. He is also a member of the National Trial Lawyers Top 100 and serves on the board of governors of the Missouri Association of Trial Attorneys.

James G. Onder continues to shape the landscape of complex litigation through tireless legal work, groundbreaking case leadership, and a deep commitment to client advocacy.

Law Office Affiliations

• Founder, OnderLaw
• Member, Missouri Association of Trial Attorneys
• Member, Multi-Million Dollar Advocates Forum
• Member, American Society of Legal Advocates
• Member, National Trial Lawyers

Licensed State

• Illinois
• Missouri

Education

• Saint Louis University
  Juris Doctor (JD)
• Washington University School of Business

Awards & Badges