Diogenes (Διογένης) is a Greek name. It may mean:

• Diogenes of Sinope (412-323 BCE), better known as Diogenes the Cynic or simply Diogenes
• Diogenes Apolloniates (about 460 BCE), philosopher
• Diogenes the Stoic (Diogenes of Seleucia on the Tigris) (c. 150 BCE)
• Diogenes Laertius (between 200-500 CE), historian
• Diogenes of Oenoanda (2nd Century CE), Epicurean]]
• Diogenes of Judea (about 100-76 BCE), general and advisor for Hasmonean king Alexander Jannaeus
• Diogenes of Babylon, Greek philospher
• Diogenes (duke of Syrmia), duke of Syrmia (11th century)

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