Castle Tioram, also known as "Dorlin Castle" to the locals, is a ruined castle located on the tidal island of Eilean Tioram in Loch Moidart, Scotland. It was once a stronghold of Clann Ruaidhrí and later became the traditional seat of Clanranald. The castle was seized by Government forces in 1692 and later torched during the Jacobite rising of 1715. Despite restoration proposals being rejected, the castle remains a significant historical site, accessible via a tidal causeway but closed to the public due to its deteriorating condition.