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

1,060 Profile Views

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Tabitha Yundt

Jan 28, 2026

Highly recommend Margaret H. "Peg" Warner for anyone needing expert Commercial Litigation law help in District of Columbia

If you're looking for someone who actually cares and will fight for you, go to Margaret H. "Peg" Warner. They helped me out big time with my Commercial Litigation law issue and kept me informed at eve...

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Bruce Runte

Jan 28, 2026

Solid work and professional service from Margaret H. "Peg" Warner in Washington for District of Columbia residents

I appreciate how Margaret H. "Peg" Warner handled my case. No fluff, just straight to the point and very effective representation for my Commercial Litigation law matter. They are obviously very exper...

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Noel Reilly

Jan 28, 2026

So happy with the results of my case thanks to the hard work of Margaret H. "Peg" Warner and staff

If you're looking for someone who actually cares and will fight for you, go to Margaret H. "Peg" Warner. They helped me out big time with my Commercial Litigation law issue and kept me informed at eve...

L

Leland Klein

Jan 28, 2026

Margaret H. "Peg" Warner did a great job handling my complex Commercial Litigation law case from start to finish

It's hard finding a reliable lawyer these days, but Margaret H. "Peg" Warner in Washington is definitely one of the good ones. Would use them again if needed without hesitation. They are professional,...

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Kristi Paucek

Jan 28, 2026

The absolute best in Washington for Commercial Litigation law - and I mean that from the bottom of my heart

Honestly, I can't thank Margaret H. "Peg" Warner enough for everything they've done for me. They really know their stuff when it comes to Commercial Litigation law and it shows in the results. 10/10 w...