Deutsche Bank AG (German pronunciation: [ˈdɔʏtʃə ˈbaŋk ʔaːˈɡeː] ) is a German multinational investment bank and financial services company headquartered in Frankfurt, Germany, and dual-listed on the Frankfurt Stock Exchange and the New York Stock Exchange.

Deutsche Bank was founded in 1870 in Berlin. From 1929 to 1937, following its merger with Disconto-Gesellschaft, it was known as Deutsche Bank und Disconto-Gesellschaft or DeDi-Bank.^: 580 Other transformative acquisitions have included those of Mendelssohn & Co. in 1938, Morgan Grenfell in 1990, Bankers Trust in 1998, and Deutsche Postbank in 2010.

As of 2018, the bank's network spanned 58 countries with a large presence in Europe, the Americas, and Asia. It is a component of the DAX stock market index and is often referred to as the largest German banking institution, with Deutsche Bank holding the majority stake in DWS Group for combined assets of 2.2 trillion euros, rivaling even Sparkassen-Finanzgruppe in terms of combined assets.

Deutsche Bank has been designated a global systemically important bank by the Financial Stability Board since 2011. It has been designated as a Significant Institution since the entry into force of European Banking Supervision in late 2014, and as a consequence is directly supervised by the European Central Bank.

According to a 2020 article in the New Yorker, Deutsche Bank had long had an "abject" reputation among major banks, as it has been involved in major scandals across various issue areas.