IndyMac, a contraction of Independent National Mortgage Corporation, was an American bank based in California that failed in 2008 and was seized by the United States Federal Deposit Insurance Corporation (FDIC).

Before its failure, IndyMac Bank was the largest savings and loan association in the Los Angeles area and the seventh largest mortgage originator in the United States. The failure of IndyMac Bank on July 11, 2008, was the fourth largest bank failure in United States, and the second largest failure of a regulated thrift at that time.