John P. Guletz dedicates his practice to helping victims of negligence and intentional wrongdoing throughout Missouri and Illinois.  He handles a wide variety of personal injury matters, including:  premises liability, medical malpractice, motor vehicle accidents, workplace accidents, Workers’ Compensation, and wrongful death.

Before turning his attention to personal injury law, John gained valuable experience working for several years as a defense attorney in class action matters.  He also worked in the fields of estate planning, business transactions, and civil litigation.  After joining Rossiter & Boock, LLC, John realized his true passion was helping victims who have been injured through no fault of their own.  He now dedicates his practice solely to personal injury matters – helping victims achieve fair compensation for their injuries.

A native St. Louisan, John earned his bachelor’s degree in Journalism from the University of Missouri – Columbia in 2004.  He then attended Saint Louis University School of Law, earning a J.D. in 2007.

John is licensed to practice law in Missouri and Illinois, as well as the U.S. District Courts of Eastern Missouri, Western Missouri and Southern Illinois.  He is a member of several state Bar associations; and for several years served as a Missouri Regional Mock Trial Volunteer Evaluator and Saint Louis University Mock Trial Competition Judge.

John currently resides in St. Louis, Missouri with his wife and daughter.


  • University of Missouri - Columbia, B.J., 2004
  • St. Louis University School of Law, J.D., 2007

Bar Admissions:

  • Illinois, 2015
  • Missouri, 2007
  • United States District Court, Eastern District of Missouri, 2013
  • United States District Court, Western District of Missouri, 2014
  • United States District Court, Southern District of Illinois, 2016

Professional Associations & Memberships:

  • The Missouri Bar
  • The Lawyers Association of St. Louis
  • Bar Association of Metropolitan St. Louis
  • Illinois State Bar Association