Baron Lilford, of Lilford in the County of Northampton, is a title in the Peerage of Great Britain. It was created in 1797 for Thomas Powys, who had previously represented Northamptonshire in the House of Commons. His grandson, the third Baron, served as a Lord-in-waiting from 1837 to 1841 in the Whig administration of Lord Melbourne. He was succeeded by his son, the fourth Baron, an ornithologist.