Friedrich Adler may refer to:

• Friedrich Adler (architect) (1827–1908), German architect and archaeologist
• Friedrich Adler (writer) (1857–1938), Czech-Austrian politician
• Friedrich Adler (artist) (1878–1942), German artist and designer, died in Auschwitz
• Friedrich Adler (politician) (1879–1960), Austrian revolutionary politician, son of Viktor Adler

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