Atty. Gregory W. Lyons

Atty. Gregory W. Lyons

Gregory W. Lyons is a lawyer practicing appellate practice, business law, civil litigation and 11 other areas of law.

Milwaukee Milwaukee 38 Years Experience 38 year
Call (414) 300-7467

Profile Summary

About Gregory W. Lyons at a glance

Gregory W. Lyons is a Shareholder based in Milwaukee, Wisconsin, practicing at O'Neil, Cannon, Hollman, DeJong & Laing S.C.. They have 38+ years of legal experience, licensed to practice since 1988. Their practice focuses on contracts, probate, personal injury, business, and class action. Admitted to practice in Wisconsin U.S. District Court, Northern District of Illinois U.S. Court of Appeals, Seventh Circuit (1988) and U.S. District Court, Eastern and Western Districts of Wisconsin (1988). Educated at Marquette University (J.D., 1988) and University of Wisconsin-Whitewater (B.A., 1984). Recognitions include AV Preeminent. Serves clients in Milwaukee, WI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Gregory W. Lyons is a lawyer practicing appellate practice, business law, civil litigation and 11 other areas of law
  • Gregory received a B.A. degree from University of Wisconsin-Whitewater in 1984, and has been licensed for 38 years
  • Gregory practices at O'Neil, Cannon, Hollman, DeJong & Laing S.C. in Milwaukee, WI

Practice Areas Explained

Gregory W. Lyons's Areas of Practice

Each practice area below reflects the types of cases Gregory W. Lyons handles, with a brief overview of what that area of law covers.

Contracts

Gregory W. Lyons is one of 67,443 contracts attorneys indexed nationally. Browse contracts attorneys in Wisconsin →

Probate

Gregory W. Lyons is one of 115,645 probate attorneys indexed nationally. Browse probate attorneys in Wisconsin →

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Gregory W. Lyons is one of 238,048 personal injury attorneys indexed nationally. Browse personal injury attorneys in Wisconsin →

Business & Corporate Law

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

Gregory W. Lyons is one of 452,854 business attorneys indexed nationally. Browse business attorneys in Wisconsin →

Class Action

Gregory W. Lyons is one of 23,998 class action attorneys indexed nationally. Browse class action attorneys in Wisconsin →

Jurisdictional Context

Why local counsel matters in Wisconsin

Practicing law in Wisconsin. Legal matters in Wisconsin are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Milwaukee are typically filed in the local municipal court or the appropriate Wisconsin state district court, depending on subject matter and amount in controversy. An attorney licensed in Wisconsin 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 Wisconsin courts without local counsel or pro hac vice admission.

Looking for additional Wisconsin attorneys? Browse all attorneys in Milwaukee or all attorneys in Wisconsin.

Frequently Asked

Common questions about Gregory W. Lyons

Where is Gregory W. Lyons's law office located?
Gregory W. Lyons's law practice is located in Milwaukee, Wisconsin. The firm is O'Neil, Cannon, Hollman, DeJong & Laing S.C.. You can contact the office directly through this profile page.
What practice areas does Gregory W. Lyons handle?
Gregory W. Lyons focuses on contracts, probate, personal injury, business, class action. Each practice area listed reflects experience handling cases of that type in Wisconsin.
How long has Gregory W. Lyons practiced law?
Gregory W. Lyons has 38+ years of legal experience and has been licensed since 1988.
Where did Gregory W. Lyons go to law school?
Gregory W. Lyons earned their education at (J.D., 1988); (B.A., 1984).
How can I contact Gregory W. Lyons for a consultation?
You can contact Gregory W. Lyons 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.
What awards or recognition has Gregory W. Lyons received?
Gregory W. Lyons's notable recognition includes: AV Preeminent.

Education

J.D.
Marquette University
- 1988
B.A.
University of Wisconsin-Whitewater
- 1984

Awards

AV Preeminent

Bar Admissions

Wisconsin U.S. District Court, Northern District of Illinois U.S. Court of Appeals, Seventh Circuit
Admitted: 1988
U.S. District Court, Eastern and Western Districts of Wisconsin
Admitted: 1988

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