
The 2012 IZOD IndyCar Series was the 17th season of the IndyCar Series, and the 101st season of American open wheel racing. Its premier event was the 96th Indianapolis 500, held on Sunday, May 27. The series was sanctioned by IndyCar, and took place in three countries on two continents. Chevrolet returned to the series for the first time since 2005 while Lotus debuted, with the latter leaving the IndyCar Series after the 2012 season due to poor performance.

The Grand Prix of Baltimore presented by SRT was an open-wheel IndyCar motor race and held as the fourteenth and penultimate round of the 2012 IndyCar Series season. It took place on Sunday, September 2, 2012. The race was contested over 75 laps at the 2.040-mile (3.283 km) temporary street circuit at Baltimore, Maryland, United States and was co-located with the Baltimore Sports Car Challenge motor race.

The 2012 Chevrolet Detroit Belle Isle Grand Prix presented by ShopAutoWeek.com was an IZOD IndyCar Series race that was held on June 3, 2012 on The Raceway on Belle Isle in Detroit, Michigan. It was the sixth race of the 2012 IZOD IndyCar Series season. Originally scheduled to run over 90 laps, it was shortened to 60 laps. The race was won by Scott Dixon for the Chip Ganassi Racing team. Dario Franchitti finished second, and Simon Pagenaud clinched third.

The 2012 Edmonton Indy was the eleventh round of the 2012 IndyCar Series season. It took place on Sunday, July 22, 2012. The race was contested over 75 laps at the 2.224-mile (3.579 km) temporary airport course at Edmonton City Centre Airport in Edmonton, Alberta, Canada.

The 2012 Honda Grand Prix of St. Petersburg was the first race of the 2012 IndyCar Series season. It was held on March 25, 2012 in St. Petersburg, Florida on the city's temporary street course, and was won by Hélio Castroneves.

The 2012 Honda Indy Toronto was the tenth round of the 2012 IndyCar Series season. It took place on Sunday, July 8, 2012. The race was contested over 85 laps at the 1.755-mile (2.824 km) street course at Exhibition Place in Toronto, Ontario, Canada. Ryan Hunter-Reay of Andretti Autosport won the race, his third consecutive win of the season, which also gave him the series' points lead.

The 96th Indianapolis 500 was held at the Indianapolis Motor Speedway in Speedway, Indiana on Sunday May 27, 2012. It was the premier event of the 2012 IZOD IndyCar Series season. For the first time since 1996 all entries featured turbocharged engines, and all entries were brand new model-year chassis, as part of the ICONIC Project. This was the first time since 2003, and only the fourth time since 1985, that all cars were a new model-year chassis.

The 2012 Indy Grand Prix of Alabama was the second race of the 2012 IndyCar Series season. The race was run on April 1, 2012 in Birmingham, Alabama, United States at Barber Motorsports Park.

The 2012 MAVTV 500 IndyCar World Championships was the 15th and final race of the 2012 IndyCar Series season. The event took place on September 15, at the 2.000-mile (3.219 km) Auto Club Speedway in Fontana, California. It was the first IndyCar race at this facility since 2005, the first 500-mile open-wheel race outside Indianapolis since the CART-sanctioned 2002 The 500 at Fontana, and the first 500-mile IndyCar Series race outside Indianapolis.

The "Itaipava São Paulo Indy 300 presented by Nestlé" was the fourth race of the 2012 IZOD IndyCar Series season. The race took place on April 29, 2012, on the 2.536-mile (4.081 km) temporary street circuit in São Paulo, Brazil, and was telecasted by the NBC Sports Network in the United States and TV Bandeirantes in Brazil.

The 2012 Toyota Grand Prix of Long Beach was the third race of the 2012 IndyCar Series season. The race was run on April 15, 2012 in Long Beach, California, United States at Streets of Long Beach.