2007年–2008年全球金融危机（英语：Financial crisis of 2007–08），又称2008年世界金融危机、次贷危机、信用危机、2008年华尔街金融危机、2008年金融崩溃，在2008年又出现了金融海啸及华尔街海啸等名称，是一场在2007年8月9日开始浮现的金融危机。自次级房屋信贷危机爆发后，投资者开始对按揭证券的价值失去信心，引发流动性危机。即使多国中央银行多次向金融市场注入巨额资金，也无法阻止这场金融危机的爆发。直到2008年9月，这场金融危机开始失控，并导致多间相当大型的金融机构倒闭或被政府接管，并引发经济衰退。

The financial crisis of 2007–08, also known as the global financial crisis and the 2008 financial crisis, is considered by many economists to have been the worst financial crisis since the Great Depression of the 1930s.

It threatened the collapse of large financial institutions, which was prevented by the bailout of banks by national governments, but stock markets still dropped worldwide. In many areas, the housing market also suffered, resulting in evictions, foreclosures and prolonged unemployment. The crisis played a significant role in the failure of key businesses, declines in consumer wealth estimated in trillions of U.S. dollars, and a downturn in economic activity leading to the Great Recession of 2008–2012 and contributing to the European sovereign-debt crisis. The active phase of the crisis, which manifested as a liquidity crisis, can be dated from August 9, 2007, when BNP Paribas terminated withdrawals from three hedge funds citing "a complete evaporation of liquidity".