Reginald de Grey, 1st Baron Grey of Wilton (c. 1240 – 5 April 1308) was an English nobleman after whom one of the four Inns of Court is named. He was son of Sir John de Grey and grandson of Henry de Grey. The property upon which Gray's Inn sits was once Portpoole Manor held by Reginald de Grey. He was summoned to Parliament from 1295 to 1307. The king demanded his presence at the English victory over the Scots at the Battle of Falkirk. His younger grandson Roger de Grey was summoned to Parliament thus becoming Baron Grey de Ruthyn.