About the Attorney

The Law Offices of Frank J. Niesen, Jr. in St. Louis, Missouri, offers expert legal representation in personal injury, criminal justice, employment law, social security, and various other legal areas. With a focus on providing compassionate and effective legal services, Attorney Frank J. Niesen, Jr. and his team work tirelessly to ensure that clients receive the compensation and justice they deserve. Whether you have been injured in a car accident in Clayton County or are facing criminal charges, you can trust the experienced attorneys at this firm to fight for your rights. Contact the St. Louis Law Offices of Frank J. Niesen, Jr. at 314-421-5800 for a consultation and let them help you navigate the complexities of the legal system.

Practice Areas

Criminal justice attorney Personal injury attorney

Client Reviews

Zina Lindsey

4/22/2026

I can't say enough good things about Frank J Niesen lll of Niesen McDonough Niesen LLC. From the free consultation to the final check Frank Niesen lll and his assistant were both professional and friendly. Frank Niesen lll was incredibly patient and reliable throughout the process. He was quick to respond to every email and phone call in a timely manner. Frank Niesen lll is a very good listener, he made me feel like a priority. Frank J Niesen lll went out of his way on more than one occasion to assist me considering my disability. His responsiveness and ability to explain complex legal issues clearly gave me a better understanding of my options. His recommendation gave me the best outcome that I am very pleased with the resolve. I highly recommend Frank J Niesen lll for any legal issues. He is the attorney you would want to represent you.