About John Karl
John K — Rinehardt is a personal injury attorney based in Mansfield, Ohio. He has been practicing law in Ohio since 1986, focusing on personal injury, medical malpractice, and products liability cases. He earned his Juris Doctor from The Ohio State University College of Law in 1986. As the managing attorney at Rinehardt Law Firm, he has successfully handled cases involving defective products, unsafe industrial machinery, reckless driving, and nursing home neglect.
His dedication to client service has earned him recognition, including the AVVO Clients’ Choice Award and the Martindale-Hubbell Client Distinction Award. In 2001, Rinehardt was certified as a Civil Trial Advocate by the National Board of Trial Advocacy, a distinction held by less than 1% of U.S. attorneys. He has been re-certified in 2011 and 2016.
He was also named to the Top 100 Ohio Super Lawyers list for 2026, marking a continued streak of recognitions dating back to 2012. Beyond his legal practice, Rinehardt is actively involved in community service. He supports organizations such as Mothers Against Drunk Driving (MADD), Mid-Ohio Youth Mentoring, and the Richland County Humane Society. He has served on the Board of Directors for the Richland County Humane Society and was an attorney advisor for the Lexington local school’s mock trial team for six years.
Rinehardt Law Firm operates offices in Mansfield and Columbus, Ohio — The Mansfield office is located at 2404 Park Avenue West, Ontario, OH 44906. The Columbus office is at 8351 N. High St, Ste 251, Columbus, OH 43235. For more information or to schedule a consultation, you can contact Rinehardt Law Firm at 419-529-2020.
