Ewald von Kleist may refer to any of the following persons:

• Ewald Georg von Kleist ({{circa|1700}}–1748), co-inventor of the Leyden jar
• Ewald Christian von Kleist (1715–1759), German poet and soldier
• Paul Ludwig Ewald von Kleist (1881–1954), German field marshal
• Ewald von Kleist-Schmenzin (1890–1945), conspirator in the 20 July plot to assassinate Adolf Hitler
• Ewald-Heinrich von Kleist-Schmenzin (1922–2013), son of Count Ewald von Kleist-Schmenzin; conspirator in the July 20 plot

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