Lord Thomas Howard (1511 – 31 October 1537), courtier, was a younger son of Thomas Howard, 2nd Duke of Norfolk by his second marriage to Agnes Tilney. He is chiefly known for his affair with Lady Margaret Douglas (1515–1578), the daughter of Henry VIII's sister, Margaret Tudor, for which he was imprisoned in the Tower, where he died on 31 October 1537. The affair is immortalized in verses by his nephew, the poet Earl of Surrey.