Auchenbreck Castle (or Auchinbreck) is located in Argyll, Scotland. Its remains are situated in Kilmodan parish, near the mouth of Glendaruel, 9 kilometres (5.6 mi) north of Tighnabruaich on the Cowal peninsula. Little remains of the castle, other than a flat rectangular platform, around 35 by 18 metres (115 by 59 ft), between Auchenbreck farmhouse and the Auchenbreck Burn.