Athalia is an English-language oratorio composed by George Frideric Handel to a libretto by Samuel Humphreys based on the play Athalie by Jean Racine. The work was commissioned in 1733 for the Publick Act in Oxford – a commencement ceremony of the University of Oxford, which had offered Handel an honorary doctorate. The story is based on that of the Biblical queen Athaliah. Athalia, Handel's third oratorio in English, was completed on 7 June 1733, and first performed on 10 July 1733 at the Sheldonian Theatre in Oxford. The Bee reported that the performance was "performed with the utmost Applause, and is esteemed equal to the most celebrated of that Gentleman's Performances: there were 3700 Persons present".

Athalie is a 1691 play, the final tragedy of Jean Racine, and has been described as the masterpiece of "one of the greatest literary artists known" and the "ripest work" of Racine's genius. Charles Augustin Sainte-Beuve deemed it comparable to Oedipus Rex in beauty, with "the true God added." August Wilhelm Schlegel thought Athalie to be "animated by divine breath"; other critics have regarded the poetics of drama in the play to be superior to those of Aristotle.