Atty. William Justin Clark

Atty. William Justin Clark

Justin Clark brings a broad range of experience to ClouseSpaniac. He is primarily engaged in civil litigation, including personal injury, assault/battery, UM/UIM, habitability and property damage claims.

Rancho Cucamonga Rancho Cucamonga 16 yrs experience 16 year
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Profile Summary

About William Justin Clark at a glance

William Justin Clark is a Shareholder based in Rancho Cucamonga, California. They have 16+ years of legal experience, licensed to practice since 2010. Their practice focuses on wrongful death, personal injury, tbi/sci, litigation, and landlord/tenant. Admitted to practice in California United States District Court, Central, and Eastern District (2010). Educated at University of Louisville J.D. and M.A. (—) and Universtiy of Louisville B.A. (—). Recognitions include AV Preeminent. Serands clients in Rancho Cucamonga, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Justin Clark brings a broad range of experience to ClouseSpaniac
  • He is primarily engaged in civil litigation, including personal injury, assault/battery, UM/UIM, habitability and property damage claims
  • He also handles cases involving product liability, breach of contract, insurance coverage disputes, intellectual property, and toxic torts
  • Mr. Clark specializes in construction site accidents, many of which have involved catastrophic or fatal injuries
  • Mr. Clark has practiced on both sides of the aisle, which has enabled him to understand first-hand the motivating factors of both plaintiffs and defendants, as well as the business practices of their respective counsel
  • His plethora of experience has empowered him to favorably resolve many diverse cases
  • While he would prefer that cases do not devolve into law and motion practice, he has prevailed on multiple Motions for Summary Judgment and Motions to Dismiss
  • His primary aim is to help his clients succeed, and he is able to do so adeptly without being combative. “Many attorneys are confused by the difference between assertiveness and hostility.” Justin acquired both his law degree and a Master’s degree in Political Science at the University of Louisville
  • While pursuing his degrees, he worked in the Office of Technology Transfer, drafting international agreements and joint venture agreements
  • He clerked at the Public Defender’s Office and completed a fellowship at the Legal Aid Society
  • He was a member of the Journal of Law and Education and on the Moot Court Board, an Associate Justice for the University Supreme Court and President of the University UNICEF Chapter
  • Outside of work, Mr. Clark enjoys spending time with his family, staying fit and playing music
  • He was a violinist with the LA Lawyers’ Philharmonic and he continues to play folk music at various venues

Practice Areas Explained

William Justin Clark's Areas of Practice

Each practice area below reflects the types of cases William Justin Clark handles, with a brief overview of what that area of law covers.

Wrongful Death

William Justin Clark is one of 31,253 wrongful death attorneys indexed nationally. Browse wrongful death attorneys in California →

Personal Injury

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.

William Justin Clark is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in California →

Brain & Spinal Cord Injury

William Justin Clark is one of 10,267 tbi/sci attorneys indexed nationally. Browse tbi/sci attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

William Justin Clark is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in California →

Landlord & Tenant

Landlord-tenant attorneys for evictions, lease disputes, security deposits, and habitability claims.

William Justin Clark is one of 22,365 landlord/tenant attorneys indexed nationally. Browse landlord/tenant attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Rancho Cucamonga are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Rancho Cucamonga or all attorneys in California.

Frequently Asked

Common questions about William Justin Clark

Where is William Justin Clark's law office located?
William Justin Clark's law practice is located in Rancho Cucamonga, California. You can contact the office directly through this profile page.
What practice areas does William Justin Clark handle?
William Justin Clark focuses on wrongful death, personal injury, tbi/sci, litigation, landlord/tenant. Each practice area listed reflects experience handling cases of that type in California.
How long has William Justin Clark practiced law?
William Justin Clark has 16+ years of legal experience and has been licensed since 2010.
Where did William Justin Clark go to law school?
William Justin Clark earned their education at (—); (—).
How can I contact William Justin Clark for a consultation?
You can contact William Justin Clark directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has William Justin Clark received?
William Justin Clark's notable recognition includes: AV Preeminent.

Education

University of Louisville J.D. and M.A.
- In Progress
Universtiy of Louisville B.A.
- In Progress

Awards

AV Preeminent

Bar Admissions

California United States District Court, Central, and Eastern District
Admitted: 2010

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