Tillydrone is an area of Aberdeen, Scotland. Lying north of the city centre and slightly north-west of Old Aberdeen, it is roughly bounded by the River Don, St Machar Drive, and the main Aberdeen-Inverness railway line. The name is a corruption of the Scottish Gaelic "Tulach Droighne", meaning a knoll with thorn trees growing on it. The name is somewhat older than the housing estate which essentially comprises the area. It is colloquially referred to as Tilly.