Steyning is a town and civil parish in the Horsham district of West Sussex, England. It is located at the north end of the River Adur gap in the South Downs, four miles (6.4 km) north of the coastal town of Shoreham-by-Sea.

Horsham is a local government district in West Sussex, England. It is named after the town of Horsham, which is its largest settlement and where the council is based. The district also includes the surrounding rural area and contains many villages, the largest of which are Southwater and Billingshurst. The district includes part of the South Downs National Park and part of the designated Area of Outstanding Natural Beauty of High Weald. At the 2021 census the district had a population of 147,487.