Lady Macbeth is a leading character in William Shakespeare's tragedy Macbeth. As the wife of the play's tragic hero, Macbeth, Lady Macbeth goads her husband into committing regicide, after which she becomes queen of Scotland. Some regard her as becoming more powerful than Macbeth when she does this, because she is able to manipulate him into doing what she wants. After Macbeth becomes a murderous tyrant, she is driven to madness by guilt over their crimes and kills herself offstage.

Macbeth is a tragedy by William Shakespeare. It is thought to have been first performed in 1606. It dramatises the damaging physical and psychological effects of political ambition on those who seek power. Of all the plays that Shakespeare wrote during the reign of James I, Macbeth most clearly reflects his relationship with King James, patron of Shakespeare's acting company. It was first published in the Folio of 1623, possibly from a prompt book, and is Shakespeare's shortest tragedy.