Diether is a German given name, composed of the elements diet "people" and her "army".

It is distinct from, but in Modern German has become homophonic with, the name Dieter, which is a short form of Dietrich, composed of the same prefix but the unrelated suffix rihhi "rich".

People called Diether include:

• Diether von Isenburg (d. 1482)
• Diether von Roeder (d. 1918), eponymous of German destroyer Z17 Diether von Roeder
• Diether Lukesch (1918–2004)
• Diether Posser (1922–2010)
• Diether Haenicke (1935–2009)
• Diether Krebs (1947–2000)
• Diether Ocampo (b. 1974)
• Diether Perez (b. 2001)
• Diether Ong (b. 2011

• Germanic name
• Ether

This page or section lists people that share the same given name.
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