华盛顿互惠公司（Washington Mutual Inc.、近年使用简称：WaMu），是美国一家于1889年至2009年间营运的银行控股公司。它的最大子公司，华盛顿互惠银行（Washington Mutual Savings Bank），曾是美国最大的储贷合作社（savings and loan association）。

曾并购美丰储蓄(Home Savings of America), Coast Federal Savings, HomeFed Bank, Great Western Bank和American Savings Bank.

Washington Mutual, Inc., abbreviated to WaMu, was a savings bank holding company and the former owner of Washington Mutual Bank, which was the United States' largest savings and loan association until its collapse in 2008.

On Thursday, September 25, 2008, the United States Office of Thrift Supervision (OTS) seized Washington Mutual Bank from Washington Mutual, Inc. and placed it into receivership with the Federal Deposit Insurance Corporation (FDIC). The OTS took the action due to the withdrawal of $16.7 billion in deposits during a 9-day bank run (amounting to 9% of the deposits it had held on June 30, 2008). The FDIC sold the banking subsidiaries (minus unsecured debt and equity claims) to JPMorgan Chase for $1.9 billion, which JPMorgan Chase had been planning to acquire as part of a confidential plan internally nicknamed Project West. All WaMu branches were rebranded as Chase branches by the end of 2009. The holding company, Washington Mutual, Inc., was left with $33 billion in assets, and $8 billion debt, after being stripped of its banking subsidiary by the FDIC. The next day, September 26, Washington Mutual, Inc. filed for Chapter 11 voluntary bankruptcy in Delaware, where it is incorporated.