Subaru of Indiana Automotive, Inc. (SIA) is an automobile manufacturer in Lafayette, Indiana USA. It began as a joint venture between Fuji Heavy Industries (FHI) and Isuzu Motors Ltd. before the latter fell on hard times. The company was incorporated on March 17, 1988 as Subaru Isuzu Automotive, Inc., and the plant building was completed on December 31, 1988 and began producing the Subaru Legacy and Isuzu Rodeo in 1989. The factory was given $98 million in state and local tax incentives when it opened, and these remain in place.

FHI purchased Isuzu's interest in the venture in 2003 for $1.00 as that company's sales faltered. With General Motors divesting from FHI, new minority shareholder Toyota Motor Corporation plans to produce 30,000 to 40,000 Camrys per year at the plant starting in 2007 to meet excess demand currently satisfied by imports from Japan. Most North American-market Camrys are now assembled at Toyota Motor Manufacturing Kentucky. Production of the Camry at SIA is expected to gradually increase to 100,000 units per annum. Camry production officially started March 9, 2007, with the first Camry built by SIA rolling off the assembly line on April 20th, 2007.

SIA employed 2,288 people as of February 2, 2000.