In the early 21st century, the private commercial space transportation industry demonstrated that commercial human space flight is both technologically and economically feasible. In 2004, the United States Congress responded by passing legislation authorizing the Department of Transportation to license and regulates commercial human space flight. This thesis examines and assesses the U.S. commercial human space flight vehicle licensing and regulatory law. Tort liability is inextricably linked to the success of the commercial human space flight industry and to that end this thesis provides an analysis of U.S. tort liability law in the event of a commercial human space flight vehicle accident.