A true international field for 99th Indy 500
Nations represented: 11
- United States (11 drivers): Marco Andretti, Townsend Bell, Ed Carpenter, Bryan Clauson, Conor Daly, JR Hildebrand, Ryan Hunter-Reay, Sage Karam, Charlie Kimball, Josef Newgarden, Graham Rahal
- Colombia (4): Gabby Chaves, Juan Pablo Montoya, Carlos Munoz, Sebastian Saavedra
- England (4): Jack Hawksworth, James Jakes, Pippa Mann, Justin Wilson
- Australia (3): Ryan Briscoe, James Davison, Will Power
- France (3): Sebastien Bourdais, Simon Pagenaud, Tristan Vautier
- Brazil (2): Helio Castroneves, Tony Kanaan
- Canada (1): Alex Tagliani
- Japan (1): Takuma Sato
- Monaco (1): Stefano Coletti
- New Zealand (1): Scott Dixon
- Spain (1): Oriol Servia
- Switzerland (1): Simona de Silvestro