Margaret H. "Peg" Warner

Margaret H. "Peg" Warner

Commercial Litigation Insurance Law Litigation - Insurance
Recognized in Best Attorney USA since 2008

About Margaret

Margaret H. "Peg" Warner: Experienced Litigation Attorney in Washington, D.C.

Peg Warner is a distinguished litigation attorney with extensive experience spanning over 30 jurisdictions across state and federal courts. Her legal career has encompassed a broad spectrum of practice areas including antitrust, commercial, class action, environmental, healthcare, insurance, mass tort, product liability, and reinsurance disputes.

Practice Areas

  • Commercial Litigation
  • Insurance Law
  • Litigation - Insurance

Peg Warner has successfully taken numerous cases to verdict or judgment before juries, judges, and arbitration tribunals. Many of her notable cases have involved high-profile public policy issues such as Agent Orange litigation from the 1980s, environmental and Superfund litigation concerning sites like Love Canal and the Hudson River in the 1990s, as well as recent controversies including sexual abuse, 9/11, antitrust, healthcare, ERISA, and COVID-19 cases.

Education & Credentials

  • B.S., Environmental Science, University of Notre Dame, 1985
  • J.D., Georgetown University Law Center, 1990

Peg Warner is admitted to practice in the United States. She has been recognized as a 'Recognized Attorney' by Best Attorney USA since 2008. Her distinguished career includes service at McDermott Will & Schulte.

Affiliations

  • McDermott Will & Schulte, Current Firm

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Reviews

4.6 / 5

39 Reviews

1,065 Profile Views

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Raymond Waelchi

Jan 28, 2026

Would recommend Margaret H. "Peg" Warner for sure to anyone in Washington needing legal help

Just wanted to say a huge thanks to Margaret H. "Peg" Warner and the staff. They really went above and beyond for me and my family during a very difficult legal battle. We couldn't have done it withou...

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Cynthia Emard

Jan 28, 2026

Excellent legal representation provided by Margaret H. "Peg" Warner for my Commercial Litigation law case

Super helpful and professional staff at Margaret H. "Peg" Warner's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and...

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Kyle Flatley

Jan 28, 2026

If you're feeling lost with a Commercial Litigation law issue in District of Columbia, call Margaret H. "Peg" Warner now

I was skeptical about hiring a lawyer for my Commercial Litigation law issue in Washington, but Margaret H. "Peg" Warner changed my mind completely. They were professional, responsive, and most import...

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Ramon Olson

Jan 28, 2026

If you're feeling lost with a Commercial Litigation law issue in District of Columbia, call Margaret H. "Peg" Warner now

Last year, I found myself in a really difficult spot with a Commercial Litigation law problem in Washington. I had no idea where to start and was honestly terrified of the process. Margaret H. "Peg" W...