Atty. Mark M. O'Neill

Atty. Mark M. O'Neill

Atty. Mark M.

Racine Racine 27 yrs experience 27 year
Call (262) 270-1096 Book Appointment

Profile Summary

About Mark M. O'Neill at a glance

Mark M. O'Neill is a Member based in Racine, Wisconsin, practicing at O'Neill Law Offices, LLC. They have 27+ years of legal experience, licensed to practice since 1999. Their practice focuses on wills, trusts, criminal defense, family law, and bankruptcy. Admitted to practice in Wisconsin (1999). Educated at Thomas M. Cooley Law School (J.D., 1999) and University of Wisconsin-Platteville (B.A., 1994). Active member of State Bar of Wisconsin American Bar Association. Serands clients in Racine, WI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Atty. Mark M. O'Neill is a lawyer practicing family law, criminal law, traffic violations and 7 other areas of law
  • Mark received a B.A. degree from University of Wisconsin-Platteville in 1994, and has been licensed for 27 years
  • Mark practices at O'Neill Law Offices, LLC in Racine, WI

Practice Areas Explained

Mark M. O'Neill's Areas of Practice

Each practice area below reflects the types of cases Mark M. O'Neill handles, with a brief overview of what that area of law covers.

Wills

Mark M. O'Neill is one of 34,541 wills attorneys indexed nationally. Browse wills attorneys in Wisconsin →

Trusts

Mark M. O'Neill is one of 104,171 trusts attorneys indexed nationally. Browse trusts attorneys in Wisconsin →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

Mark M. O'Neill is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Wisconsin →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Mark M. O'Neill is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Wisconsin →

Bankruptcy & Debt

A bankruptcy attorney can help you eliminate debt, stop creditor harassment, and protect your home through Chapter 7 or Chapter 13.

Mark M. O'Neill is one of 105,321 bankruptcy attorneys indexed nationally. Browse bankruptcy 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 Racine 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 andnue, 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 Racine or all attorneys in Wisconsin.

Frequently Asked

Common questions about Mark M. O'Neill

Where is Mark M. O'Neill's law office located?
Mark M. O'Neill's law practice is located in Racine, Wisconsin. The firm is O'Neill Law Offices, LLC. You can contact the office directly through this profile page.
What practice areas does Mark M. O'Neill handle?
Mark M. O'Neill focuses on wills, trusts, criminal defense, family law, bankruptcy. Each practice area listed reflects experience handling cases of that type in Wisconsin.
How long has Mark M. O'Neill practiced law?
Mark M. O'Neill has 27+ years of legal experience and has been licensed since 1999.
Where did Mark M. O'Neill go to law school?
Mark M. O'Neill earned their education at (J.D., 1999); (B.A., 1994).
How can I contact Mark M. O'Neill for a consultation?
You can contact Mark M. O'Neill 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.

Education

J.D.
Thomas M. Cooley Law School
- 1999
B.A.
University of Wisconsin-Platteville
- 1994

Bar Admissions

Wisconsin
Admitted: 1999

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