Mark S. Williams, Attorney at Law

Mark S. Williams

Criminal Defense

Criminal defense with
honesty and integrity

Attorney and Arizona native Mark S. Williams has been providing quality criminal defense representation for over 25 years, representing clients in the greater Phoenix metro area and throughout the state of Arizona. This Arizona State University School of Law graduate and former Prosecutor handles both misdemeanor and felony cases. He believes strongly that every person accused of committing a criminal offense deserves thorough and professional legal advocacy and thoughtful representation in court.  




16515 S. 40th Street
Suite 107
Phoenix, Arizona 85048


Areas of Practice

DUI Alcohol and DUI drugs

DUI cases are complex and can significantly impact the lives of people facing prosecution for these offenses. Mark Williams stays current with the frequent statutory changes that can have a significant effect on the outcome of a particular DUI case. Recent police enforcement efforts have particularly targeted DUI drug cases, including DUI marijuana cases.

vehicular Felony and misdemeanor crimes

Under Arizona law, a motor vehicle is deemed to be a "dangerous instrument." That legal reality can trigger serious prison exposure for alleged driving behavior that causes physical injury. Less serious cases handled by Mark Williams include reckless driving, leaving the scene of an accident, driving on a suspended or revoked license, and civil traffic violations.

domestic violence offenses

Assault, disorderly conduct, criminal damage, and violations of Orders of Protection are crimes that become more serious when they are alleged to have been committed in the context of a domestic relationship. Consequences of conviction include mandatory domestic violence counseling, and could include incarceration, fines, and a bar on ownership or possession of a firearm.

theft and shoplifting

Arizona law allows both misdemeanor and felony prosecution for theft-related conduct, including shoplifting. These cases often involve video surveillance and other evidentiary aspects that are legally complex. First offense shoplifting case can sometimes be resolved in a way that avoids a permanent criminal record.

Drug offenses

Mark Williams has years of experience handling cases alleging possession of illegal drugs, including more serious cases alleging sale or possession for sale.

sex offenses

Being accused of a sexual offense can have devastating consequences and expose the defendant to significant prison time. Advocacy for an accused sex offender is always delicate and challenging. Mark Williams has experience with these cases and handles them with sensitivity and professionalism.


The strictest law sometimes becomes the severest injustice.
— Benjamin Franklin



Let's Chat.

Use the form below to contact us regarding your legal matter. To help us best service your enquiry, we recommend that you first describe the nature of the pending matter. You may also email or call us to make an appointment. Sending Mark S. Williams, Attorney at Law, an email will not make you a client of our firm. Until we have agreed to represent you, anything you send us may not be confidential or privileged. If you would like to inquire about possible representation, please call the office to schedule an appointment at 480.491.5558.

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