All for Love; or, the World Well Lost, is a 1677 heroic drama by John Dryden which is now his best-known and most performed play. It is dedicated to the Earl of Danby. It is a tragedy written in blank verse and is an attempt on Dryden's part to reinvigorate serious drama. It is an acknowledged imitation of Shakespeare's Antony and Cleopatra, and focuses on the last hours of the lives of its hero and heroine.

Although it ostensibly deals with the same topic as Shakespeare's Antony and Cleopatra, Dryden confines the action to Alexandria and focuses on the end of their doomed relationship. It first appeared in 1677, was revived in 1704 and performed 123 times between 1700 and 1800, becoming the preferred version of the story; Shakespeare's play did not reappear on the London stage until 1813.

The original 1677 production by the King's Company starred Charles Hart as Marc Antony and Elizabeth Boutell as Cleopatra, with Michael Mohun as Ventidius and Katherine Corey as Octavia. The play was revived at Lincoln's Inn Fields in February 1704, with Betterton as Antony, Mrs. Barry as Cleopatra, Wilks as Dolabella, and Mrs. Bracegirdle as Octavia; at Drury Lane in December 1718, with Booth as Antony, Mrs. Oldfield as Cleopatra, and Mrs. Porter as Octavia.

The play was first printed by Thomas Newcomb for the London bookseller Henry Herringman in 1678.

Serapion describes foreboding omens (of storms, whirlwinds, and the flooding of the Nile) of Egypt's impending doom. Alexas, Cleopatra's eunuch, dismisses Serapion's claims and is more concerned with Cleopatra's relationship with Antony. He sees that Cleopatra dotes on Antony and worries that Antony will not continue seeing Cleopatra. Thus, Serapion hosts a festival to celebrate Antony's honour.

Ventidius, a Roman general, comes to aide Antony in Alexandria. Ventidius disagrees with Antony's relationship with Cleopatra and offers to give Antony troops if he leaves her. Although Antony is insulted by Ventidius's opinions regarding Cleopatra (and refuses to hear anything negative about her), Antony agrees.

Cleopatra mourns about her situation without Antony. Charmion, Cleopatra's lady in waiting, attempts to set up a meeting between Cleopatra and Antony, but she is unsuccessful. Cleopatra thus sends Alexas to try to win back Antony using gifts (jewels including a bracelet). Alexas suggests that Cleopatra should tie the bracelet onto Antony's wrist. In the subsequent meeting between Cleopatra and Antony, Ventidius appears and tries to proclaim how Cleopatra is not Antony's rightful partner and would betray him for her own safety. However, Cleopatra wins this argument by demonstrating a letter showing that she refused Egypt and Syria from Octavius. Antony is overjoyed by Cleopatra's decision and proclaims his love for her.

Antony is returning from battle and is overwhelmed with love for Cleopatra. Ventidius comes to speak with Antony, who attempts to flee unsuccessfully. Antony does not want to go back to war but does not know how to stop it. He believes Dolabella can help him and Ventidius brings Dolabella out. Dolabella, Antony's friend, appears after Antony's success in battle. Dolabella was banished for his love for Cleopatra, but he returns to a warm welcome from Antony. Dolabella offers a gift that will bring peace between Antony and Caesar. The gift is Octavia, Antony's true wife and Caesar's sister, and Antony's two daughters. Octavia tells Antony the war will stop when he returns to his rightful place, by her side. Antony and Octavia reunite, and Alexas's attempts to meddle for the sake of Cleopatra are dismissed. Cleopatra appears informed of her defeat. Alexas tells her to avoid Octavia but Cleopatra chooses to face her as a rival. Cleopatra and Octavia have an argument, it seems clear that Octavia is whom Antony rightfully belongs to, even if it is not she whom he loves most!