About Us For the best legal assistance in Gillette, Wyoming, you can trust the dedicated staff at Robert J. O'Neil, PC who will work hard to ensure the best possible outcome for you. If you have been accused of a crime, contemplating a divorce, or facing a traffic violation, Robert J. O'Neil, PC can help you through your case and get you the results that you are looking for.

Our legal services are available to all residents of the northeastern part of Wyoming, and surrounding areas. Robert J. O'Neil has been practicing since 1979, and he is always ready to fight aggressively for his clients to get the resolution needed.