Atty. Mark W Ryan

Atty. Mark W Ryan

Mr. Mark W Ryan is a lawyer practicing commercial, administrative law, securities & investment fraud and 6 other areas of law.

Washington Washington 45 yrs experience 45 year
Call (771) 240-2018 Book Appointment

Administrative Law & More Attorney · Serving Washington, DC · 45+ Years Experience

Profile Summary

About Mark W Ryan at a Glance

Mark W Ryan is a Partner based in Washington, District of Columbia, practicing at Mayer Brown Llp. They have 45+ years of legal experience, licensed to practice since 1981. Their practice focuses on business, class action, securities, litigation, and consumer. Admitted to practice in District of Columbia (1981) and Maryland US Supreme Court US Court of Appeals for the District of Columbia Circuit US Court of Appea (1993). Educated at Duke University School of Law (J.D., 1981) and Syracuse University B.A. magna cum laude (—). Active member of former, Activities American Bar Association, Antitrust Section, Vice Chair, Agriculture and Food Committee. Serves clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Mark W Ryan

  • Mr. Mark W Ryan is a lawyer practicing commercial, administrative law, securities & investment fraud and 6 other areas of law
  • Mark received a B.A. degree from Syracuse University, and has been licensed for 45 years
  • Mark practices at Mayer Brown LLP in Washington, DC

Practice Areas Explained

Mark W Ryan's Areas of Legal Practice

Each practice area below reflects the types of cases Mark W Ryan handles, with a practical overview of what that area of law involves and how it may apply to your situation in Washington.

Business & Corporate Law in Washington

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Mark W Ryan is one of 497,491 business attorneys indexed nationally. Browse business attorneys in District of Columbia →

Class Action in Washington

Mark W Ryan is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys in District of Columbia →

Securities Law in Washington

Mark W Ryan is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in District of Columbia →

Civil Litigation in Washington

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Mark W Ryan is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Consumer Protection in Washington

Consumer protection attorneys for fraud, lemon law, debt harassment, and deceptive trade practices.

Mark W Ryan is one of 50,226 consumer attorneys indexed nationally. Browse consumer attorneys in District of Columbia →

Jurisdictional Context

Why Local Counsel Matters in Washington

Practicing law in District of Columbia. Legal matters in District of Columbia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Washington are typically filed in the local municipal court or the appropriate District of Columbia state district court, depending on subject matter and amount in controversy. An attorney licensed in District of Columbia brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in District of Columbia courts without local counsel or pro hac vice admission.

Washington Courts and Legal Process

Choosing a Washington-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common Questions About Mark W Ryan

Where is Mark W Ryan's law office located?
Mark W Ryan's law practice is located in Washington, District of Columbia. The firm is Mayer Brown Llp. You can contact the office directly through this profile page.
What practice areas does Mark W Ryan handle?
Mark W Ryan focuses on business, class action, securities, litigation, consumer. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Mark W Ryan practiced law?
Mark W Ryan has 45+ years of legal experience and has been licensed since 1981.
Where did Mark W Ryan go to law school?
Mark W Ryan earned their education at (J.D., 1981); (—).
How can I contact Mark W Ryan for a consultation?
You can contact Mark W Ryan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Professional Profile

Why Clients in Washington Choose Mark W Ryan

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark W Ryan's practice in the field of business, class action, securities, litigation, and consumer.

Decade-Tested Legal Experience

Mark W Ryan brings 45+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in District of Columbia and Maryland US Supreme Court US Court of Appeals for the District of Columbia Circuit US Court of Appea, Mark W Ryan can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering business, class action, and securities, Mark W Ryan can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Washington

A Washington-based practice means Mark W Ryan attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Mark W Ryan Handles in Washington

Below is a representative sample of the types of matters Mark W Ryan has experience with under District of Columbia law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact Mark W Ryan directly to discuss the specifics of your situation.

Search Reference

How People Find Mark W Ryan Online

Prospective clients searching for legal help in Washington commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Mark W Ryan.

Mark W Ryan attorney Mark W Ryan lawyer Mark W Ryan Washington Mark W Ryan District of Columbia Mark W Ryan reviews Mark W Ryan contact Mayer Brown Llp law firm business attorney in Washington business lawyer Washington best business attorney Washington top rated business lawyer near me business attorney District of Columbia find a lawyer near me how to hire an attorney

If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Mark W Ryan directly.

Education & Law School Background

J.D.
Duke University School of Law
- 1981
—
Syracuse University B.A. magna cum laude
- In Progress

Bar Admissions & Licensed Jurisdictions

District of Columbia
Admitted: 1981
Maryland US Supreme Court US Court of Appeals for the District of Columbia Circuit US Court of Appea
Admitted: 1993

Client Reviews & Ratings — Mark W Ryan

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