Atty. Gary W. Callahan

Atty. Gary W. Callahan

Gary W. Callahan is a lawyer practicing environmental/toxic torts, agricultural and rural law, business law and 5 other areas of law.

Denver Denver 49 yrs experience 49 year
Call (720) 792-1731 Book Appointment

Profile Summary

About Gary W. Callahan at a glance

Gary W. Callahan is an Of Counsel based in Denver, Colorado, practicing at Gordon Rees Scully Mansukhani, LLP. They have 49+ years of legal experience, licensed to practice since 1977. Their practice focuses on formation, personal injury, business, litigation, and environmental. Admitted to practice in West Virginia (Inactive) (1977) and Colorado (1989). Educated at University of Kentucky (J.D. Literature, 1977) and University of Kentucky (B.A. Literature, 1971). Active member of Larimer County Bar Association. Serands clients in Denver, CO and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Gary W. Callahan is a lawyer practicing environmental/toxic torts, agricultural and rural law, business law and 5 other areas of law
  • Gary received a B.A. degree from University of Kentucky in 1971, and has been licensed for 49 years
  • Gary practices at Gordon Rees Scully Mansukhani, LLP in Denver, CO

Practice Areas Explained

Gary W. Callahan's Areas of Practice

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

Business Formation

Gary W. Callahan is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Colorado →

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.

Gary W. Callahan is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Colorado →

Business & Corporate Law

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

Gary W. Callahan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Colorado →

Civil Litigation

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

Gary W. Callahan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Colorado →

Environmental Law

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

Gary W. Callahan is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in Colorado →

Jurisdictional Context

Why local counsel matters in Colorado

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

Looking for additional Colorado attorneys? Browse all attorneys in Denver or all attorneys in Colorado.

Frequently Asked

Common questions about Gary W. Callahan

Where is Gary W. Callahan's law office located?
Gary W. Callahan's law practice is located in Denver, Colorado. The firm is Gordon Rees Scully Mansukhani, LLP. You can contact the office directly through this profile page.
What practice areas does Gary W. Callahan handle?
Gary W. Callahan focuses on formation, personal injury, business, litigation, environmental. Each practice area listed reflects experience handling cases of that type in Colorado.
How long has Gary W. Callahan practiced law?
Gary W. Callahan has 49+ years of legal experience and has been licensed since 1977.
Where did Gary W. Callahan go to law school?
Gary W. Callahan earned their education at (J.D. Literature, 1977); (B.A. Literature, 1971).
How can I contact Gary W. Callahan for a consultation?
You can contact Gary W. Callahan 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. Literature
University of Kentucky
- 1977
B.A. Literature
University of Kentucky
- 1971

Bar Admissions

West Virginia (Inactive)
Admitted: 1977
Colorado
Admitted: 1989

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