Baron Lucy (anciently Lucie or Luci) is a title that has been created four times, three times by tenure and once by writ, which means that the peerages could descend through both male and female lines. The first creation by tenure came in the 12th century with Chief Justiciar Richard de Luci. In 1320, the title Baron Lucy was created in the Peerage of England by writ of summons dated 15 May 1320. The title Baron Lucy has been dormant since 1398.