St Denys railway station serves the St. Denys and Portswood suburbs of Southampton in Hampshire, England. Built in 1865, the station is named after the surrounding area, which in turn is named after the Priory of St Denys, a major landmark in medieval Southampton. Services run hourly to Portsmouth & Southsea and Southampton. These are operated by South West Trains using Class 450s. Also, there are hourly services between Salisbury and Romsey via Southampton & Eastleigh, using Class 158s.