Last reviewed by the Haute Lawyer editorial team · August 2026 · Profile information is reviewed for accuracy. Learn about our editorial standards →

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Verified Haute Lawyer Member · 2026
This attorney has been vetted and recognized by Haute Living as a distinguished legal professional with a proven commitment to legal excellence.
James Colgan is a highly respected Colorado trial attorney with over 25 years of courtroom experience representing clients on both sides of the legal system. His career reflects a rare and powerful combination of law enforcement, prosecution, defense, and civil trial advocacy, giving him a comprehensive understanding of how cases are built—and how they are won.
Attorney Colgan began his professional career in law enforcement, serving as both a police officer and deputy sheriff for nearly five years. That firsthand experience investigating crimes and working within the criminal justice system laid the foundation for his legal career and provides invaluable insight into police procedures, evidence gathering, and constitutional protections.
After leaving law enforcement to attend law school, Mr. Colgan quickly discovered that litigation and trial work were where he belonged. Upon graduation, he joined the District Attorney's Office, where he spent years advocating for victims of serious crimes. As a Chief Deputy District Attorney, he successfully conducted numerous jury trials involving offenses ranging from DUI and child victim crimes to sexual assault and homicide. His work helped secure justice for victims and removed dangerous individuals from the community.
Following his tenure as a prosecutor, Attorney Colgan made a purposeful decision to shift his practice toward representing individuals rather than the government or corporations. Driven by a passion for helping people navigate the complexities of the legal system, he transitioned into private practice to advocate for those facing life-altering legal challenges.
Today, James Colgan represents criminal defendants and plaintiffs in personal injury cases, fighting to protect their rights, freedom, and financial recovery. Whether securing statutory compensation for injured clients or mounting a powerful defense for individuals accused of crimes, he brings unmatched trial readiness and strategic precision to every case.
What truly distinguishes Attorney Colgan is the depth and diversity of his trial experience. He has tried cases as a prosecutor, as a criminal defense attorney, and as plaintiffs' counsel in civil litigation—an uncommon combination that allows him to anticipate opposing strategies and command the courtroom with confidence. Former clients have described him as a "pit bull in the courtroom," known for his relentless advocacy and unwavering commitment to results.
When you or a family member need an experienced Colorado trial lawyer with a proven record on both sides of the courtroom, the Law Offices of James Colgan provide the skill, experience, and determination necessary to protect your future.
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Profile last reviewed: August 3, 2026
Law Office of James Colgan, LLC
11990 Grant Street, Suite 550
Northglenn, Colorado 80233
James Colgan focuses on criminal defense and personal injury law. His criminal work includes sex crimes, DUI and traffic offenses, and felony charges, while his civil work covers vehicle accidents, premises liability, catastrophic injury, and insurance bad-faith claims.
He has been admitted to the Colorado bar since 1994 (Registration No. 24518) and reports admission to the State Bar of Texas since 2013 (Bar Card No. 24086881).
Before practicing law, he worked for nearly five years as a deputy sheriff and police officer. He then served as a prosecutor, including as Chief Deputy District Attorney, before entering private practice representing individuals (self-reported).
His firm, The Law Office of James Colgan, LLC, is located at 11990 Grant Street, Suite 550, Northglenn, CO 80233, serving the Denver metropolitan area.
This information is provided for general reference only and does not constitute legal advice or create an attorney–client relationship.
For independent credentialing and peer-recognition information in criminal defense, consult these authoritative bodies.
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