John Webster (c. 1580 – c. 1634) was an English Jacobean dramatist best known for his tragedies The White Devil and The Duchess of Malfi, which are often regarded as masterpieces of the early 17th-century English stage. His life and career overlapped William Shakespeare's.

Webster's major plays, The White Devil and The Duchess of Malfi, are macabre, disturbing works that seem to prefigure the Gothic literature of the late eighteenth and early nineteenth centuries.[citation needed] Intricate, complex, subtle and learned, they are difficult but rewarding, and are still frequently staged today.

Webster has received a reputation for being the Elizabethan and Jacobean dramatist with the most unsparingly dark vision of human nature. Even more than John Ford, whose 'Tis Pity She's a Whore is also very bleak, Webster's tragedies present a horrific vision of mankind. In his poem "Whispers of Immortality," T. S. Eliot memorably says that Webster always saw "the skull beneath the skin".

On the other hand, Webster's title character in The Duchess of Malfi is presented as a figure of virtue by comparison to her malevolent brothers, and in facing death she exemplifies classical Stoic courage. Her martyr-like death scene has been compared to that of the titular king in Christopher Marlowe's play Edward II. Webster's use of a strong, virtuous woman as his central character was rare for his time and represents a deliberate reworking of some of the original historical event on which his play was based. The character of the duchess recalls the Victorian poet and essayist Algernon Charles Swinburne's comment in A Study of Shakespeare that in tragedies such as King Lear Shakespeare had shown such a bleak world as a foil or backdrop for virtuous heroines such as Ophelia and Imogen, so that their characterization would not seem too incredible. Swinburne describes such heroines as shining in the darkness.

While Webster's drama was generally dismissed in the eighteenth and nineteenth centuries, many twentieth century critics and theatregoers found The White Devil and The Duchess of Malfi to be brilliant plays of great poetic quality and dark themes. One explanation for this change is that only after the horrors of war in the early twentieth century could their desperate protagonists be portrayed on stage again, and understood. W. A. Edwards wrote of Webster's plays in Scrutiny II (1933–4): "Events are not within control, nor are our human desires; let's snatch what comes and clutch it, fight our way out of tight corners, and meet the end without squealing." The violence and pessimism of Webster's tragedies have seemed to some analysts close to modern sensibilities.