Dennis J. Quinn

4.5 (32 reviews )

Washington District of Columbia United States

Ethics and Professional Responsibility Law

Recognized in Best Attorney USA since 2021

202-310-5500 Website

About Dennis

Dennis J. Quinn is a top attorney recognized by Best Lawyers in the practice area(s) of Ethics and Professional Responsibility Law.Dennis J., who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Dennis J. is held by other top lawyers in the same geographic and legal practice area.

Dennis J. Quinn is a top attorney recognized by Best Lawyers in the practice area(s) of Ethics and Professional Responsibility Law.

Dennis J., who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Dennis J. is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Ethics and Professional Responsibility Law

Education

The George Washington University

Awards & Recognition

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Reviews

4.5 / 5

32 Reviews

1,064 Profile Views

Kent Jones

Jan 26, 2026

Great people who truly care at Dennis J. Quinn - the best legal team in District of Columbia

Dennis J. Quinn has been doing this since Recognized in Best Lawyers since 2021, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal...

Ismael Hills

Jan 26, 2026

Solid work and professional service from Dennis J. Quinn in Washington for District of Columbia residents

I've worked with a few lawyers in Washington over the years, but Dennis J. Quinn stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I fe...

Evelyn O'Reilly

Jan 26, 2026

Excellent legal representation provided by Dennis J. Quinn for my Ethics and Professional Responsibility Law case

If you need a Ethics and Professional Responsibility Law lawyer, Dennis J. Quinn is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the det...

Shelley Haley

Jan 26, 2026

Absolutely Great! I couldn't be happier with the service from Dennis J. Quinn

Super helpful and professional staff at Dennis J. Quinn'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 legal ex...

Charlie Hirthe

Jan 26, 2026

Solid work and professional service from Dennis J. Quinn in Washington for District of Columbia residents

Solid experience overall with the law firm of Dennis J. Quinn. They know Ethics and Professional Responsibility Law inside and out and gave me great advice. Very helpful and got the job done exactly a...