John A Horn

Practice Areas

Former Atlanta U.S. Attorney John Horn has more than 25 years of experience in government and internal investigations, white collar criminal defense, national security, cybersecurity, and crisis management. He is an accomplished trial and appellate lawyer who advises corporations and senior executives in response to investigations and enforcement actions by government agencies. Clients in a broad range of industries, from financial services to retail and logistics to life sciences and healthcare, rely on John to navigate sensitive, high profile, and complex matters that pose threats to business continuity and reputation. He also counsels clients regarding corporate compliance reviews and initiatives.

John has guided Fortune 50 companies, multistate health care systems, and entrepreneurial start-ups through criminal, civil, and administrative investigations by a broad slate of federal and state agencies, leading to declinations or, if necessary, global resolutions of parallel enforcement actions. Since leaving DOJ, John has led defense teams responding to investigations of federal contracting fraud, health care fraud, environmental violations, FDA violations, pharmacy and controlled substance compliance, consumer protection issues, and multiple other concerns raised by government agencies. John also has conducted independent investigations requested by companies and government entities alike to produce comprehensive reports of potential misconduct that have been relied upon by boards and oversight agencies when responding to crisis-level events.

Mr. Horn is an active member of the National Association of Former United States Attorneys (NAFUSA) and recently served as the Chair of the Ethics and Procurement Subcommittee for Atlanta Mayor Andre Dickens’ transition team. John is an active board member and volunteer of the Atlanta Volunteer Lawyer’s Foundation (AVLF) and is an advisory board member for the Atlanta Islamic Speaker’s Bureau.