Robert S. Rivkin (born December 6, 1960) is the Chief Legal Officer of United Airlines. Until February 2019, he was Deputy Mayor of the City of Chicago, focusing his efforts on economic development, job creation and retention, and infrastructure. For a year prior to his appointment, he practiced law at Riley Safer Holmes & Cancila LLP, advising clients on aviation, rail, road and other transportation issues, internal investigations, white collar criminal defense, domestic and international business regulation, and commercial litigation. Prior to that, he served as the Senior Vice President for Regulatory and International Affairs and Deputy General Counsel of Delta Air Lines. Prior to joining Delta in April 2013, he was the 21st General Counsel of the United States Department of Transporta