Rusco Tower, sometimes called Rusco Castle, is a tower house near Gatehouse of Fleet in Dumfries and Galloway, Scotland. Built around 1500 for Mariota Carson and her husband Robert Gordon, on lands given to them by her father, it was used to incarcerate a number of the Gordons' rivals in the 16th century. After Robert Gordon died and Carson remarried, their eldest son James Gordon seized the tower and imprisoned his mother, fearing that she would make it over to her new husband, Thomas Maclellan of Bombie. Gordon went on to kill Maclellan on the High Street in Edinburgh, while a court case intended to settle the matter was ongoing.