Atty. Mark Donaldson Lyons
Mark Donaldson Lyons is a lawyer practicing commercial litigation, business law, labor and employment and 7 other areas of law. Mark received a B.S. degree from University of Oklahoma in 1977, and has been licensed for 46 years.
Business Law & More Attorney · Serving Tulsa, OK · 46+ Years Experience
Profile Summary
About Mark Donaldson Lyons at a Glance
Mark Donaldson Lyons is a Senior Attorney based in Tulsa, Oklahoma, practicing at Lyons & Clark, Inc.. They have 46+ years of legal experience, licensed to practice since 1980. Their practice focuses on medical malpractice, personal injury, criminal defense, employment, and business. Admitted to practice in Oklahoma (1980), U.S. District Court, Northern District of Oklahoma (1982), U.S. District Court, Western District of Oklahoma and U.S. Court of Appeals, Tenth Circuit (1982), and Muscogee (Creek) Nation (1989). Educated at University of Tulsa, College of Law (J.D., 1980) and University of Oklahoma (B.S. Zoology, 1977). Recognitions include AV Preeminent. Active member of Tulsa County and Oklahoma Bar Associations. Serves clients in Tulsa, OK and the surrounding metropolitan area.
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About Mark Donaldson Lyons
- Mark Donaldson Lyons is a lawyer practicing commercial litigation, business law, labor and employment and 7 other areas of law
- Mark received a B.S. degree from University of Oklahoma in 1977, and has been licensed for 46 years
- Mark practices at Lyons & Clark, Inc. in Tulsa, OK
Practice Areas Explained
Mark Donaldson Lyons's Areas of Legal Practice
Each practice area below reflects the types of cases Mark Donaldson Lyons handles, with a practical overview of what that area of law involves and how it may apply to your situation in Tulsa.
Medical Malpractice in Tulsa
Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.
Mark Donaldson Lyons is one of 48,593 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Oklahoma →
Personal Injury in Tulsa
Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.
Mark Donaldson Lyons is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in Oklahoma →
Criminal Defense in Tulsa
A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.
Mark Donaldson Lyons is one of 212,605 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Oklahoma →
Employment Law in Tulsa
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
Mark Donaldson Lyons is one of 167,770 employment attorneys indexed nationally. Browse employment attorneys in Oklahoma →
Business & Corporate Law in Tulsa
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Mark Donaldson Lyons is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Oklahoma →
Jurisdictional Context
Why Local Counsel Matters in Tulsa
Practicing law in Oklahoma. Legal matters in Oklahoma are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Tulsa are typically filed in the local municipal court or the appropriate Oklahoma state district court, depending on subject matter and amount in controversy. An attorney licensed in Oklahoma 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 Oklahoma courts without local counsel or pro hac vice admission.
Tulsa Courts and Legal Process
Choosing a Tulsa-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 Oklahoma attorneys? Browse all attorneys in Tulsa or all attorneys in Oklahoma.
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Professional Profile
Why Clients in Tulsa Choose Mark Donaldson Lyons
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 Donaldson Lyons's practice in the field of medical malpractice, personal injury, criminal defense, employment, and business.
Decade-Tested Legal Experience
Mark Donaldson Lyons brings 46+ 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 Oklahoma, U.S. District Court, Northern District of Oklahoma, and U.S. District Court, Western District of Oklahoma and U.S. Court of Appeals, Tenth Circuit, Mark Donaldson Lyons can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering medical malpractice, personal injury, and criminal defense, Mark Donaldson Lyons can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Tulsa
A Tulsa-based practice means Mark Donaldson Lyons attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Mark Donaldson Lyons Handles in Tulsa
Below is a representative sample of the types of matters Mark Donaldson Lyons has experience with under Oklahoma law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Mark Donaldson Lyons directly to discuss the specifics of your situation.
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How People Find Mark Donaldson Lyons Online
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Mark Donaldson Lyons's Practice Areas & Specializations
Education & Law School Background
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Bar Admissions & Licensed Jurisdictions
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