John Neville, 4th Baron Latimer (c. 1520 – 22 April 1577) was an English peer, and the stepson of Katherine Parr, later the sixth wife of King Henry VIII.
In her will, dated 23 March 1545, Margaret stated that she was unable to render Katherine sufficient thanks 'for the godly education and tender love and bountiful goodness which I have evermore found in her Highness'.
In January 1537, Neville, his sister Margaret, and step-mother Katherine were held hostage at Snape Castle during the Pilgrimage of Grace.
Katherine remained close to her former stepchildren, and made the 4th Baron's wife, Lucy Somerset, a lady-in-waiting upon marrying King Henry VIII and becoming queen.
Of the situation in 1553, Thomas Edwards wrote to the Earl of Rutland describing the violence which had taken place with the servant quoting "too great a villainy for a noble man, my thought."