Atty. Thomas M. O'Sullivan

Atty. Thomas M. O'Sullivan

Thomas M. O'Sullivan is a lawyer practicing natural resource, environmental law, corporate and 1 other area of law.

33 yrs experience 33 year
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Profile Summary

About Thomas M. O'Sullivan at a glance

Thomas M. O'Sullivan is an AltaGas Ltd.. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on business, environmental, and aviation. Admitted to practice in Alberta (1993). Educated at University of Calgary (LL.B., 1992) and University of Alberta (B.Sc., 1983).

Verified attorney profile · Updated June 2026

About

  • Thomas M. O'Sullivan is a lawyer practicing natural resource, environmental law, corporate and 1 other area of law
  • Thomas M. received a degree from University of Alberta in 1983, and has been licensed for 33 years
  • Thomas M. practices in Calgary, AB

Practice Areas Explained

Thomas M. O'Sullivan's Areas of Practice

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

Business & Corporate Law

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

Thomas M. O'Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys →

Environmental Law

Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.

Thomas M. O'Sullivan is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys →

Aviation Law

Aviation attorneys for aircraft accidents, FAA regulation, pilot defense, and aviation industry matters.

Thomas M. O'Sullivan is one of 9,225 aviation attorneys indexed nationally. Browse aviation attorneys →

Frequently Asked

Common questions about Thomas M. O'Sullivan

What practice areas does Thomas M. O'Sullivan handle?
Thomas M. O'Sullivan focuses on business, environmental, aviation. Each practice area listed reflects experience handling cases of that type in their licensed jurisdictions.
How long has Thomas M. O'Sullivan practiced law?
Thomas M. O'Sullivan has 33+ years of legal experience and has been licensed since 1993.
Where did Thomas M. O'Sullivan go to law school?
Thomas M. O'Sullivan earned their education at (LL.B., 1992); (B.Sc., 1983).
How can I contact Thomas M. O'Sullivan for a consultation?
You can contact Thomas M. 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.

Education

LL.B.
University of Calgary
- 1992
B.Sc.
University of Alberta
- 1983

Bar Admissions

Alberta
Admitted: 1993

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