Twelfth Night, or What You Will is a romantic comedy by William Shakespeare, believed to have been written around 1601–1602 as a Twelfth Night entertainment for the close of the Christmas season. The play centres on the twins Viola and Sebastian, who are separated in a shipwreck. Viola, believing her brother dead, disguises herself as a young man named Cesario and enters the service of Duke Orsino. Orsino sends Cesario to woo the Countess Olivia on his behalf, but Olivia falls in love with the messenger instead. The resulting love triangle is further complicated by the unexpected arrival of Sebastian, leading to a cascade of mistaken identities, comic confusion, and ultimately, joyful reunions and marriages.
One of Shakespeare's most beloved comedies, Twelfth Night explores themes of gender, identity, and the folly of love. Its cross-dressing heroine and witty dialogue have made it a perennial favorite on the stage. The play draws on earlier sources, including Barnabe Rich's short story Of Apollonius and Silla, which itself was based on a tale by Matteo Bandello. The first documented public performance took place on February 2, 1602, at Candlemas, though it was not published until its inclusion in the 1623 First Folio.
Over the centuries, Twelfth Night has inspired countless adaptations across every medium, from opera and ballet to film and television. Its central conceit of a woman disguising herself as a man has proven remarkably durable, lending itself to modern reimaginings in high school settings, corporate boardrooms, and beyond. The play's enduring popularity is a testament to its timeless humor and its surprisingly modern interrogation of gender roles.
