Denver DUI Attorney / Denver Criminal Defense Attorney

Who We Are

The NELLESSEN LAW OFFICE, P.C., was founded by Attorney, Thomas J. Nellessen.  Tom has been practicing in the Denver area since 1991.  Mr. Nellessen has dedicated his practice to defending those charged with DUI matters and criminal offenses.  With his extensive experience in the criminal courts, Mr. Nellessen understands how the criminal court system works and how to best preserve your constitutional rights.  

Thomas Nellessen represents his clients in matters involving DUI, Drug cases, Domestic Violence, Assaults, Child Abuse cases, and virtually all other felony and misdemeanor offenses.  In addition to his very active litigation practice, Thomas Nellessen takes a risk management approach with his clients. Furthermore, Tom believes in day-to-day contact with his clients to assist in evaluating the needs of each client.  This practice helps to minimize the potential harm that may result from a criminal conviction, and allows for a proper and complete trial preparation.

Mr. Nellessen is actively involved in communicating with prosecutors in order to negotiate the best possible resolution of a case if a trial is not warranted.  Of course, each and every case is different.  If a case is ripe for trial, you can be assured that Mr. Nellessen will be fully prepared.  In conclusion, if you are facing a criminal charge, call The NELLESSEN LAW OFFICE today.  Free consultations are available.

Thomas J. Nellessen, Attorney at Law

Thomas J. Nellessen, Attorney

Denver DUI Attorney Thomas J. Nellessen


  • Juris Doctor: Northern Illinois University, College of Law, 1990.
  • Bachelor of Science: Metropolitan State College, Denver, 1987.

Bar Admissions

  • Admitted to practice in the State of Colorado, 1991
  • United States District Court, District of Colorado
  • Colorado Criminal Defense Bar

Bar Memberships

  • Colorado Bar Association
  • Criminal Law Bar
  • American Bar Association
  • Colorado Criminal Defense Bar
  • Douglas/Elber County Bar Associations
  • DUI Defense Lawyers Association (DUIDLA)
  • National Criminal Defense Lawyers Association (NCDLA)

Contact Us


2101 Market Street, #1-C

Denver, CO 80202

(303) 284-5781

Contact Form

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