Albaston (Cornish: Trevalba) is a hamlet in Cornwall, England, United Kingdom. It is located at Ordnance Survey grid reference grid reference SX 423 704. Albaston is about 1 mile (2 kilometres) from the centre of Gunnislake and half-a-mile (0.7 kilometres) from Gunnislake railway station, the terminus of the Tamar Valley Line from Plymouth. A brewery was once located in Albaston but closed in the 1920s.