John II of Brienne-Beaumont

John II of Brienne-Beaumont (c. 1305 – before 21 January 1355) was the eldest son of Robert of Beaumont, viscount of Beaumont, and Marie de Craon, and a descendant of John of Brienne, king of Jerusalem. In 1327 he succeeded his father to the viscounty and its lordships.

In 1338 he served at Amiens as a knight banneret. By his second wife, Marguerite de Poitiers, he had his heir Louis II, and he was buried at Melinais Abbey.