The Republic - Persons of the Dialogue

Socrates, who is the narrator.

Glaucon.

Adeimantus.

Polemarchus.

Cephalus.

Thrasymachus.

Cleitophon.

And others who are mute auditors.

The scene is laid in the house of Cephalus at the Piraeus; and the whole dialogue is narrated by Socrates the day after it actually took place to Timaeus, Hermocrates, Critias, and a nameless person, who are introduced in the Timaeus.