The Night of the Long Knives was the purge of Adolf Hitler's political opponents in Nazi Germany in 1934.

Night of the Long Knives may also refer to:

• Night of the Long Knives (Arthurian), the massacre of British chieftains by Saxons at peace negotiations ca. AD 460
• Night of the Long Knives (1962), British Prime Minister Harold Macmillan's dismissal of seven members of his cabinet
• Night of the Long Knives, the assassination of Alexander Burnes in November 1841 in Kabul, Afghanistan
• Night of the Long Knives, the Kitchen Accord in 1981 in Canada
• Night of the Long Knives, a song from the 1981 album For Those About to Rock (We Salute You), by Australian rock band AC/DC.

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