Milecastle 8 (West Denton) was a milecastle of the Roman Hadrian's Wall. Its remains are located in what is now West Denton, Newcastle upon Tyne. The milecastle has two associated turret structures which are known as turret 8A and turret 8B. The turrets and milecastle were excavated in the 1920s, yielding some pottery and stone carvings, but have since been overlain by modern roads. The exact locations of the structures is disputed, with the road now hiding any surface traces.