A.J. Foyt Enterprises Santino Ferrucci
Sting Ray Robb
Andretti Global Colton Herta
Kyle Kirkwood
Marcus Ericsson
Arrow McLaren
Patricio O'Ward
Callum Ilott (GP 1, 5)
Théo Pourchaire (GPs 2-4, 6-7) Nolan Siegel (GPs 8-17) Alexander Rossi (GPs 1-11, 13-17) Théo Pourchaire (GP 12) Chip Ganassi Racing Linus Lundqvist
Scott Dixon
Alex Palou
Marcus Armstrong
Kyffin Simpson
Dale Coyne Racing Jack Harvey (GPs 1-4, 6-10, 13-17) Nolan Siegel (GP 5) Conor Daly (GP 11) Hunter McElrea (GP 12) Colin Braun (GP 1) Nolan Siegel (GP 2)
Luca Ghiotto (GPs 3-4, 7-8) Katherine Legge (GP 5, 10-11, 13, 15-17) Tristan Vautier (GP 6) Toby Sowery (GP 9, 12, 14) Ed Carpenter Racing
Christian Rasmussen (GPs 1-4, 6-9, 12, 14-17) Ed Carpenter (GP 5, 10-11, 13)
Rinus VeeKay
Christian Rasmussen
(GP 5)
Juncos Hollinger Racing Romain Grosjean
Agustin Canapino (GPs 1-6, 8-12) Nolan Siegel (GP 7) Conor Daly (GPs 13-17) Meyer Shank Racing Felix Rosenqvist
Tom Blomqvist (GPs 1-5)
Helio Castroneves (GPs 6-7) David Malukas (GPs 8-17) Helio Castroneves
(GP 5)
Rahal Letterman Lanigan Racing Graham Rahal
Pietro Fittipaldi
Christian Lundgaard
Takuma Sato (GP 5)
Jüri Vips (GP 14) Team Penske Josef Newgarden
Scott McLaughlin
Will Power
Andretti Herta Marco Andretti
(GP 5)
Dreyer & Reinbold Racing Ryan Hunter-Reay
(GP 5)
Conor Daly
(GP 5)
McLaren-Hendrick Kyle Larson
(GP 5)