Lady Jane is a 1986 British costume-historical drama romance film, directed by Trevor Nunn, written by David Edgar, and starring Helena Bonham Carter as the title character.

It tells the story of Lady Jane Grey, her marriage to Lord Guildford Dudley, and her reign as the "Nine Days' Queen" following the death of Edward VI of England.

Anticipating the young king's imminent death from tuberculosis and anxious to keep England true to the Protestant Reformation by keeping the Catholic Princess Mary from the throne, John Dudley, 1st Duke of Northumberland, Lord President of the Council and second only to the king in power, hatches a plan to marry his second son, Lord Guildford, to Lady Jane Grey, and have the royal physician keep the young king Edward VI alive—albeit in excruciating pain—long enough to get him to name Jane his heir.

She is troubled by the questionable legality of her accession, but after consulting with Guildford, turns the tables on John Dudley and the others who thought to use her as a puppet.

When the rebellion fails, Queen Mary I offers to spare Jane's life if she renounces her Protestant faith.