Sir Drugo Barentyn (died 1415), sometimes spelled as "Drew", "Dru", "Barentine" or "Barrington", was an English goldsmith and politician who served twice as Lord Mayor of London.
His ancestors had been seigneurs of Rozel in western Normandy, before coming to England two generations before his birth.
At the beginning of the term, Barentyn was made to swear an oath on behalf of the city's citizens upholding the banishment of Henry Bolingbroke (the future Henry IV); later in his term, he was entrusted with discreetly transporting the deposed Richard II to the Tower of London.
He held the position of court jeweler during the reigns of Richard II and Henry IV.
[2] In 1400, he was issued a letter of marque to avenge the loss of a cargo of French wine to pirates.