John L. Warren III

Attorney John L. Warren III joined the Law Office of Bill Nettles in August 2021, focusing his practice on Whistleblower/False Claims Act cases, criminal defense, personal injury, and appellate litigation.

John began his legal career clerking for Justice John W. Kittredge of the Supreme Court of South Carolina. For many lawyers, a judicial clerkship is a capstone achievement, as it provides a unique perspective into how Judges think. But one was not enough for John, as he realized that his clients would need a lawyer experienced in State and Federal trial and appellate courts.

After spending several years at a boutique litigation firm in Columbia, South Carolina, John had the opportunity to clerk for newly confirmed United States District Judge Donald C. Coggins, Jr. John promptly packed his bags and moved across the state to Spartanburg, South Carolina, where he worked for Judge Coggins for two-and-a-half years.

John then moved to Greenville, South Carolina, where he spent a year clerking for Judge A. Marvin Quattlebaum, Jr. of the United States Court of Appeals for the Fourth Circuit. All told, John spent nearly six years clerking, which provided an invaluable perspective on how to effectively advocate on behalf of his clients.

John’s approach to the practice of law is tethered to one fundamental truth: Most people only need a lawyer on the worst day of their life. For some, that might mean they are facing criminal charges or professional licensing proceedings. But many people simply find themselves in a difficult situation and just need help.

John is also an Adjunct Professor and Co-Director of the Moot Court Program at the University of South Carolina School of Law. When he is not teaching or practicing law, John enjoys hunting, travelling to concerts with his wife, Kaylynn, and spending time outdoors with his black labs, Brandeis and Wilson.


South Carolina

U.S. District Court for the District of South Carolina

U.S. Court of Appeals for the Fourth Circuit

Supreme Court of the United States


Holding the Bench Accountable: Judges Qua Representatives, 6 WASH. U. JUR. REV. 299 (2014).

Note, Tale of Two Andersons: Anderson v. South Carolina Election Commission and Anderson v. Celebrezze—An Examination of the Constitutionality of Section 8-13-1356 of the South Carolina Code of Laws Following the 2012 Primary Ballot Access Controversy, 5 ELON L. REV. 223 (2013).

Neal Cassady: A Life in Literature (University of South Carolina Honors College Thesis)

In The News:

Lawsuit Accuses Columbia’s First Baptist Church of History of Covering Up Child Sex Abuse, The State (October 13, 2017),

How Trump’s “Buy American” Order May Shape Fraud Cases, Bloomberg Law (July 27, 2017),

Lawsuit Against Turbeville’s Alleged Speed Trap Gains Momentum, The State (June 27, 2016),

South Carolina’s “Speed Trap”: Turbeville Committing Highway Robbery Suit Alleges, The State (June 25, 2016),

If you find yourself in need of an experienced lawyer in South Carolina and you want to speak with us about your case, please call the Law Office of Bill Nettles at 803-814-2826 for a free consultation.