Atty. James C. O'Sullivan

Atty. James C. O'Sullivan

James C. O'Sullivan is a lawyer practicing civil litigation, criminal law, family law and 3 other areas of law.

Greenfield Greenfield 60 yrs experience 60 year
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Profile Summary

About James C. O'Sullivan at a glance

James C. O'Sullivan is a Member based in Greenfield, Massachusetts, practicing at O'Sullivan & Bray. They have 60+ years of legal experience, licensed to practice since 1966. Their practice focuses on criminal defense, family law, litigation, and civil rights. Admitted to practice in Massachusetts (1966). Educated at Boston University (LL.B., 1966) and University of Massachusetts (B.B.A., 1963). Recognitions include BV Distinguished. Active member of Franklin County and Massachusetts Bar Associations. Serands clients in Greenfield, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • James C. O'Sullivan is a lawyer practicing civil litigation, criminal law, family law and 3 other areas of law
  • James received a B.B.A. degree from University of Massachusetts in 1963, and has been licensed for 60 years
  • James practices at O'Sullivan & Bray in Greenfield, MA

Practice Areas Explained

James C. O'Sullivan's Areas of Practice

Each practice area below reflects the types of cases James C. O'Sullivan handles, with a brief overview of what that area of law covers.

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.

James C. O'Sullivan is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Massachusetts →

Family Law

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

James C. O'Sullivan is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Massachusetts →

Civil Litigation

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

James C. O'Sullivan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Massachusetts →

Civil Rights

Civil rights attorneys for discrimination, police misconduct, constitutional rights, and civil liberties cases.

James C. O'Sullivan is one of 70,245 civil rights attorneys indexed nationally. Browse civil rights attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

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

Looking for additional Massachusetts attorneys? Browse all attorneys in Greenfield or all attorneys in Massachusetts.

Frequently Asked

Common questions about James C. O'Sullivan

Where is James C. O'Sullivan's law office located?
James C. O'Sullivan's law practice is located in Greenfield, Massachusetts. The firm is O'Sullivan & Bray. You can contact the office directly through this profile page.
What practice areas does James C. O'Sullivan handle?
James C. O'Sullivan focuses on criminal defense, family law, litigation, civil rights. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has James C. O'Sullivan practiced law?
James C. O'Sullivan has 60+ years of legal experience and has been licensed since 1966.
Where did James C. O'Sullivan go to law school?
James C. O'Sullivan earned their education at (LL.B., 1966); (B.B.A., 1963).
How can I contact James C. O'Sullivan for a consultation?
You can contact James C. O'Sullivan 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 James C. O'Sullivan received?
James C. O'Sullivan's notable recognition includes: BV Distinguished.

Education

LL.B.
Boston University
- 1966
B.B.A.
University of Massachusetts
- 1963

Awards

BV Distinguished

Bar Admissions

Massachusetts
Admitted: 1966

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