Atty. Mark S. Williams
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.
Criminal Law & More Attorney · Serving Phoenix, AZ · 47+ Years Experience
Profile Summary
About Mark S. Williams at a Glance
Mark S. Williams is a Member based in Phoenix, Arizona, practicing at Mark S Williams. They have 47+ years of legal experience, licensed to practice since 1979. Their practice focuses on dui/dwi, drug crimes, criminal defense, sex crimes, and theft. Admitted to practice in Arizona (1979) and U.S. District Court, District of Arizona (1979). Educated at Arizona State University (J.D., 1979) and North Arizona University (B.A., 1976). Recognitions include AV Preeminent. Active member of Maricopa County Bar Association State Bar of Arizona National Association of Criminal Defense Lawyers. Serves clients in Phoenix, AZ and the surrounding metropolitan area.
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About Mark S. Williams
- 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
Practice Areas Explained
Mark S. Williams's Areas of Legal Practice
Each practice area below reflects the types of cases Mark S. Williams handles, with a practical overview of what that area of law involves and how it may apply to your situation in Phoenix.
DUI / DWI Defense in Phoenix
Find experienced DUI and DWI defense attorneys near you. Compare verified profiles, read client reviews, and consult about your case for free.
Mark S. Williams is one of 29,739 dui/dwi attorneys indexed nationally. Browse dui/dwi attorneys in Arizona →
Drug Crimes in Phoenix
Mark S. Williams is one of 6,914 drug crimes attorneys indexed nationally. Browse drug crimes attorneys in Arizona →
Criminal Defense in Phoenix
A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.
Mark S. Williams is one of 212,605 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Arizona →
Sex Crimes in Phoenix
Mark S. Williams is one of 5,296 sex crimes attorneys indexed nationally. Browse sex crimes attorneys in Arizona →
Theft & Property Crimes in Phoenix
Mark S. Williams is one of 5,818 theft attorneys indexed nationally. Browse theft attorneys in Arizona →
Jurisdictional Context
Why Local Counsel Matters in Phoenix
Practicing law in Arizona. Legal matters in Arizona are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Phoenix are typically filed in the local municipal court or the appropriate Arizona state district court, depending on subject matter and amount in controversy. An attorney licensed in Arizona brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Arizona courts without local counsel or pro hac vice admission.
Phoenix Courts and Legal Process
Choosing a Phoenix-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.
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Professional Profile
Why Clients in Phoenix Choose Mark S. Williams
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark S. Williams's practice in the field of dui/dwi, drug crimes, criminal defense, sex crimes, and theft.
Decade-Tested Legal Experience
Mark S. Williams brings 47+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Arizona and U.S. District Court, District of Arizona, Mark S. Williams can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering dui/dwi, drug crimes, and criminal defense, Mark S. Williams can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Phoenix
A Phoenix-based practice means Mark S. Williams attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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How People Find Mark S. Williams Online
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Mark S. Williams's Practice Areas & Specializations
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