

St. Louis Criminal Defense Lawyer
Over Five Decades of Defending Those Accused of Burglary, Theft, Sex Crimes, and More!
Facing criminal charges can be frightening, overwhelming, and confusing. You may be unsure of what to do or what to say, but everything you do from this point on can directly impact your criminal case and future. In these situations, you must exercise your right to legal counsel. So call an experienced criminal defense attorney in St. Louis, MO, at Cavanagh & Associates to protect your constitutional legal rights!
When your freedom is on the line, trust your criminal case to attorney Jack Cavanagh. He is a former prosecutor and seasoned trial lawyer with over half a century of legal experience. At Cavanagh & Associates, our criminal defense attorneys represent clients facing charges in St. Louis, Chesterfield, St. Charles, and the surrounding areas in MO. In addition, our attorneys take on cases involving DUI/DWI arrests, sex crime charges, domestic violence allegations, drug crimes, theft charges, and other misdemeanor and felony criminal offenses.


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Jack has been a lawyer for a long time. He values his clients and sees them as people with individual circumstances, and not just dollar bills like other attorneys. Anyone that knows anything about the law knows it’s about making and keeping good rapport with all parties involved. And for a defense attorney, being familiar with the judge to the prosecutor and being on a friendly basis with them is exceptionally important. And Jack knows everyone! He should as he’s been doing this for probably over 40 years. He’s not only a great attorney but I consider him a friend. Don’t make the mistake of choosing an unknown rookie attorney who may be a couple bucks cheaper. Choose Jack!- Paige
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My experience with Mr. Cavanagh was very pleasant. I was kept informed about what was going on with my case. Phone calls were returned promptly and everything was explained to me. Knowledgeable, personable and fair - can't ask for much more than that. He was on my side. One more thing.... he's not a pushover when it comes to the opponent! Love it!- Terri Buckner
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I would highly recommend setting up a consultation with Jack regarding your legal matters as he certainly goes above and beyond for his clients.- Matt
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Jack is great lawyer with lots of experience. I’m glad we I hired him to represent me. We won a battle like David against Goliath.- Rolles G.
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Mr. Cavanagh was very patient in dealing with all of the difficulties of my case. He was pleasant to work with to get the child support and custody worked out in a way that was fair. He showed real concern for the welfare of my son. He was professional in guiding me with regards to counseling and getting my sons voice heard throughout the case as well. Lastly he was thorough in that he went through the original divorce decree and made sure I received what I should have gotten during the divorce. I would recommend Mr. Cavanagh as well as use him again in the future.- Former Client
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He has worked with me even though we are in different states to ensure I am kept abreast of what is going on.- Former Client
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Jack did a great job representing me while dealing with a high conflict ex. He was able to tell me what to expect and what was worth fighting for and did it in a way that made it easy to accept.
- Dustin G. -
Mr. Jack Cavanagh was my attorney getting me removed from an child birth certificate that wasn’t my child. He made the process very easy and timely manner the communication was very good and I was beyond satisfy with the outcome and service Thank you Mr.Jack and Ms.English- Demetric L.

What Our Work Means
Our Values
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We have a genuine desire to see our clients succeed.
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Attorney Cavanagh handles our clients' legal matters personally.
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We achieve positive case outcomes through thorough preparation.
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Attorney Cavanagh is a former prosecutor turned legal advocate.
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We offer confidential consultations to every client.
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Attorney Cavanagh has over 50 years of legal experience.
