byrnes law firm criminal defense attorney missouri

Get Bill Byrnes Working For You NOW!

CALL 636.896.4300

Are you in trouble? Get the best st. Charles Attorney fighting for you!


DWI and DUI Defense

The consequences of a DWI charge can be severe, and are determined by a judge. You could lose your license, be charged large fines, and face jail time.

You need to understand the case that’s building against you, and get the right defense for yourself. Bill Byrnes will help you.


Drug Possession Charges 

Our recent success here at Byrnes Law Firm, involved 84 pounds of marijuana.  The out of state driver was facing decades in DOC and was ultimately released within days after paying a fine.

Get our best outcome with Bill’s expertise. Don’t let sneaky tactics get the best of you! Bill Byrnes defends your rights!


Weapons Violations

Bill has seen all sorts of cases related to weapons violations, and has the experience that’ll take your case far beyond just being educated on the law.

Fight for your American freedoms, and gain a powerful ally in defending your rights in the courtroom. Get Bill Byrnes on your side.


Stealing and Theft Cases

Theft and Stealing are serious felonies. Bill Byrnes defends people against serious criminal charges, and you should feel confident in trusting your case to him.

Your criminal defense attorney’s skills and personality make a huge difference in the courtroom. Get Bill Byrnes working for you!

Free & Confidential

Your initial consultation is free and confidential. It's just you and me reviewing your case at no charge

Don't Speak To Police!

Never confess anything in writing or verbally. Just say ``I will make no statements until my lawyer arrives.``

You Have Power 24/7

Police may make you feel powerless. Bill will help you win! Call 24/7 if you are arrested or wanted for questioning.


It may be difficult for you to believe, but this really is a lawyer you can trust! We’ve helped hundreds of people get the best possible judgment for their case. Let us help you too!

When you find yourself up against the legal and political power of the law, count on Bill Byrnes

Bill fights for you!


Bill knows how to win in court

Bill’s no rookie when it comes to defending your rights in court. He knows the tricks that police use to get convictions, and has been winning cases for over 15 years

Maybe you didn’t do anything. Maybe you simply made a mistake. Whatever the case, you shouldn’t have to live with it for the rest of your life. Bill Byrnes will fight for the best possible outcome for your case!

See Our Success!


Our clients love our results

Bill has won hundreds of cases over his career, in a wide variety of practice areas. See the Byrnes Law Firm difference, and contact us today with any of these legal issues you may be facing.

Learn more

Bill Byrnes, Drunk Driving and Serious Charge Criminal Defense Attorney

Award-Winning and Nationally Honored Criminal Defense

attorney William ByrnesWilliam (Bill) Byrnes, is an Award-Winning and Nationally Honored Criminal Defense attorney. In 2013, The National Advocacy for DUI Defense (NAFDD) invited Bill to join their invite-only organization of the nation’s very best private DUI attorneys. The NAFDD honored Bill as one of the top 100 Driving Under the Influence (DUI) attorneys out of the 24,423 in Missouri. In the invitation, NAFDD Executive Director, Stephen Glazer stated, “Let’s face it: DUI law can be complicated, and not all attorneys are created equal.”

Byrnes Law Firm, led by William Byrnes, has received praise from our clients. With a growing list of clients, and the five-star reviews of our services, we’re sure Bill Byrnes is the right guy to take on your case.

You can be confident in his legal abilities from the start. Bill graduated Cum Laude at the top 10% of his class and has continued to excel throughout his career. Even though he holds all of these honors, he always helped people and still gets it. He knows this is possibly the most afraid you have ever been and understands you have a ton of questions. Bill will walk you through the entire process. If you or someone you love has been arrested, is wanted for questioning or has a warrant, do not wait to get answers. He will help you 24/7. Call anytime for free at 636-896-4357.

Share some love on Google

Don't take on the courts alone! Get an experienced lawyer to help!

CALL 636-896-4300

You were always my go to…

“You were always my go to. Thanks for taking care of me, and caring that I could take care of myself!” –

– Matthew Krueger

A courtroom can be very scary…

“Being in a courtroom can be very scary, unfortunately I speak from experience. Best feeling in the world is not having to worry when you know you have Bill in your corner!”

– Joel Wallschleager

This WILL be my next lawyer…

“This will be my next lawyer if I ever need one. I have seen him in action in Warrenton. If anyone ever needs a lawyer and cannot find his number let me know. It’s on my refrigerator!”

– Elaine Frei

Office Location

Byrnes Law Firm LLC
1000 Fairgrounds Road #103
St. Charles Missouri 63301

Call ANYTIME Day or Night!

I am pleased to serve clients in St. Charles, St. Louis, Clayton, Fenton, Eureka, Des Peres, Kirkwood, Rock Hill, Webster Groves, Ballwin, Manchester, Town & Country, Maryland Heights, Earth City, Bridgeton, Hazelwood, O’Fallon, St. Peters, Washington, Wentzville, Wright City, Troy, Union, Hillsboro, Warrenton, St. Charles County, St. Louis County, Lincoln County, Warren County and Montgomery County.

Disclaimer: Your choice of an attorney should not be based on advertising alone. Your use and interaction with this website, or the use of tools within it to contact Byrnes Law Firm does not constitute an attorney client relationship.

Use of this website constitutes acceptance of our Terms of Use and Privacy Policy