Drusus was a cognomen in Ancient Rome, and may refer to:

• Drusus Caesar - was the son of Germanicus, also called Drusus III.
• Gaius Livius Drusus was consul in 147 BC.
• Julius Caesar Drusus was the son of Tiberius, also called Drusus II or Drusus Minor.
• Marcus Livius Drusus was the name of two Republican politicians, a father and son
• Marcus Livius Drusus Claudianus was the father of Livia.
• Marcus Livius Drusus Libo was consul in 15 BC.
• Marcus Scribonius Libo Drusus was a grandson of Pompey, and was charged with plotting against Tiberius, Germanicus, and Drusus II in 16. He committed suicide.
• Nero Claudius Caesar Drusus was the full adopted name of Emperor Nero.
• Nero Claudius Drusus was the brother of Tiberius, also called Drusus I.
• Tiberius Claudius Drusus Nero Germanicus was the original name of emperor Claudius.

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