1980 IndyCar season Drivers and constructors Drivers and constructors

| Team | Chassis | Engine | Tires | Drivers |
|---|---|---|---|---|
| Armstrong Mould O`Hanlon Racing | Wildcat Lola Orbiter McLaren March | DGS Cosworth Chevrolet | G | Tom Bigelow Howdy Holmes Danny Ongais |
| Armstrong Mould O`Hanlon Racing | Wildcat Lola Orbiter McLaren March | DGS Cosworth Chevrolet | G | Greg Leffler |
| Armstrong Mould O`Hanlon Racing | Wildcat Lola Orbiter McLaren March | DGS Cosworth Chevrolet | G | Gary Bettenhausen |
| Armstrong Mould O`Hanlon Racing | Wildcat Lola Orbiter McLaren March | DGS Cosworth Chevrolet | G | Bruce Hill |
| Armstrong Mould O`Hanlon Racing | Wildcat Lola Orbiter McLaren March | DGS Cosworth Chevrolet | G | Cliff Hucul Lee Kunzman |
| Interscope Racing | Parnelli | Cosworth | G | Danny Ongais |
| Richmond Racing Mach I Racing | Penske | Cosworth | G | Tim Richmond |
| Beaudoin Racing | McLaren | Cosworth | G | Billy Engelhart |
| Sun Systems | Penske | Cosworth | G | Bill Whittington |
| Sun Systems | Penske | Cosworth | G | Don Whittington |