Liss (previously spelt Lys or Lyss) is an English town and civil parish in the East Hampshire district of Hampshire, 3.3 miles (5.3 km) north-east of Petersfield, on the A3 roadway, on the West Sussex boundary. It covers 3,567 acres (14 kilometres ²) of semi-rural countryside in the South Downs National Park. Liss railway station gets on the Portsmouth Direct Line. The village makes up an old town at West Liss and also a modern-day village round the 19th-century station. They are split by the River Rother. Residential areas later on spread towards Liss Forest.