The Apology of Socrates is Plato's version of the speech given by Socrates as he unsuccessfully defended himself in 399 BCE against the charges of corrupting the young and not believing in the gods in whom the city believes, but in other daimonia that are novel.

"Apology" here has its earlier meaning (now usually expressed by the word "apologia") of speaking in defense of a cause or of one's beliefs or actions.

The revised edition of this popular textbook features revised vocabulary and grammatical notes that now appear on the same page as the text, sentence diagrams, principal parts of verbs listed both by Stephanus page and alphabetically, word frequency list for words occurring more than twice, and complete vocabulary.