Sir Archibald Douglas (before 1298 – 19 July 1333) was a Scottish nobleman, Guardian of Scotland, and military leader. He is sometimes given the epithet "Tyneman" (Old Scots: Loser), but this may be a reference to his great-nephew Archibald Douglas, 4th Earl of Douglas.
The younger son of Sir William "le Hardi" Douglas, the Governor of the castle at Berwick-upon-Tweed, and his wife, Eleanor de Lovaine. Douglas was also half-brother of "the Good" Sir James Douglas, King Robert the Bruce's deputy.
Douglas is first heard of in 1320 when he received a charter of land at Morebattle in Roxburghshire and Kirkandrews in Dumfriesshire from King Robert. In 1324, he was recorded as being granted the lands of Rattray and Crimond in Buchan and the lands of Conveth, Kincardineshire, already being possession of Cavers in Roxburghshire, Drumlanrig and Terregles in Dumfriesshire, and the lands of West Calder in Midlothian. By the time of his death, he was also in possession of Liddesdale.
History then keeps quiet about Douglas except whilst serving under his older brother, James, in the 1327 campaign in Weardale, where his foragers "auoint curry apoi tot levesche de Doresme"- overran nearly all the Bishopric of Durham. (Scalacronica)