A.J. Foyt Enterprises Charlie Kimball
Tony Kanaan (GP 1, 5-9)
Dalton Kellett (GPs 2-4, 10-11)
Sébastien Bourdais (GPs 12-14) Dalton Kellett (GP 7, 12-13) Andretti Autosport Zach Veach (GPs 1-11) James Hinchcliffe (GPs 12-14) Alexander Rossi
Ryan Hunter-Reay
James Hinchcliffe (GPs 1-2, 7) Andretti Harding Steinbrenner Colton Herta
Andretti Herta Marco Andretti
Arrow McLaren SP
Patricio O'Ward
Oliver Askew (GPs 1-11, 14) Helio Castroneves (GPs 12-13)
Fernando Alonso
(GP 7)
Carlin Conor Daly (GP 1, 5-6, 8-9) Max Chilton (GPs 2-4, 7, 10-14) Chip Ganassi Racing
Marcus Ericsson
Scott Dixon
Felix Rosenqvist
Dale Coyne Racing Alex Palou
Santino Ferrucci
James Davison
(GP 7)
DragonSpeed Ben Hanley
(GP 7)
Dreyer & Reinbold Racing Sage Karam (GP 2, 7, 12-13) JR Hildebrand
(GP 7)
Ed Carpenter Racing Ed Carpenter (GP 1, 5-9) Conor Daly (GPs 2-4, 10-14)
Rinus VeeKay
Conor Daly
(GP 7)
Meyer Shank Racing Jack Harvey
Rahal Letterman Lanigan Racing Graham Rahal
Takuma Sato
Spencer Pigot (GP 2, 7) Team Penske Josef Newgarden
Will Power
Simon Pagenaud
Helio Castroneves (GP 7) Scott McLaughlin (GP 14)