- Wadhurst, Wealden District, East Sussex
- Wakehurst, near Ardingly, West Sussex
- Walberton, Arun District, West Sussex
- Waldron, Wealden District, East Sussex
- Wannock, Wealden District, East Sussex
- Warbleton, Wealden District, East Sussex
- Warminghurst, Horsham District, West Sussex
- Warnham, Horsham District, West Sussex
- Warningcamp, Arun District, West Sussex
- Warninglid, Mid Sussex District, West Sussex
- Wartling, Wealden District, East Sussex
- Washington, Horsham District, West Sussex
- Weald and Dowland Open Air Museum, Singleton, West Sussex
- Wellingham, Lewes District, East Sussex
- West Blatchington, Hove, The City of Brighton and Hove
- West Burton, Chichester District, West Sussex
- West Chiltington, Horsham District, West Sussex
- West Dean, near Chichester, Chichester District, West Sussex
- West Dean, near Eastbourne, off the Seaford to Eastbourne coast road
- West Firle, Lewes District, East Sussex
- West Grinstead, Horsham District, West Sussex
- West Harting, Chichester District, West Sussex
- West Hoathly, Mid Sussex District, West Sussex
- West Itchenor, Chichester District, West Sussex
- West Lavant, Chichester District, West Sussex
- West Lavington, Chichester District, West Sussex
- West Marden, Chichester District, West Sussex
- West Stoke, Chichester District, West Sussex
- West Sussex
- West Tarring, Borough of Worthing, West Sussex
- West Thorney, Chichester District, West Sussex
- West Wittering, Chichester District, West Sussex
- Westbourne, Chichester District, West Sussex
- Westfield, Rother District, East Sussex
- Westham, Wealden District, East Sussex
- Westhampnett, Chichester District, West Sussex
- Westmeston, Lewes District, East Sussex
- Whalesbone, The hundred of
- Whatlington, Rother District, East Sussex
- Whitehawk Camp, Brighton
- Wiggonholt, Horsham District, West Sussex
- Willingdon, Wealden District, East Sussex
- Wilmington, Wealden District, East Sussex
- Winchelsea, Rother District, East Sussex
- Wisborough Green, Chichester District, West Sussex
- Wiston, Horsham District, West Sussex
- Withdean, The City of Brighton and Hove
- Withyham, Wealden District, East Sussex
- Wivelsfield, Lewes District, East Sussex
- Wolstonbury Hill, near Hassocks, East Sussex
- Woodgate, Chichester District, West Sussex
- Woodingdean, eastern suburb of the City of Brighton and Hove
- Woodmancote, Horsham District, West Sussex
- Woolbeding, Chichester District, West Sussex
- Worth, Mid Sussex District, West Sussex
- Worthing, West Sussex
- Worthing: guides and directories
- Wych Cross, Ashdown Forest, East Sussex
- Wyndham, The Half-hundred of Wyndham
