About the Attorney

Hennessey Law Firm, LLC, located in Creve Coeur, Missouri, is a trusted law firm led by experienced attorney Cynthia M. Hennessey. With over 25 years of experience, Hennessey Law Firm specializes in personal injury, workers’ compensation, and social security cases in Missouri and Illinois.

Cynthia Hennessey is a dedicated lawyer known for her compassionate and effective representation. Whether you have been injured in a car accident, truck accident, or workplace incident, Cynthia Hennessey and her team are here to help you navigate the legal process and fight for the compensation you deserve.

If you are in need of a skilled personal injury attorney in the St. Louis area, look no further than Hennessey Law Firm, LLC. Contact us today for a consultation and let us advocate for your rights.

Practice Areas

Personal injury attorney

Client Reviews

Sherita Holland

4/15/2026

Hennessey absolutely did a wonderful job with helping my mother. They were diligent, respectful, and determined to get my mom the justice she deserved. We will Always defer to them for their kindness & expertise if there is ever a need for help in the future and if you are a client of theirs trust that you are in great hands. Thank you Hennessy Law Firm for Everything that you have done for my mom and our family!!!!

Matt Julius

4/09/2025

The absolute stress I had prior to hiring Hennessey Law Firm was insane. It was constant miscommunication and getting hassled by my work comp case manager. Once I contacted Hennessey Law Firm, everything went smooth. From that point on it was zero stress and smooth sailing. Consistent contact on major updates, they were able to negotiate a max settlement offer, and actually cared about me and my recovery. I hope to never have to need them again, but if I do I will probably call them before I call 911 they are THAT good!