- Gatwick, West Sussex
- Glynde, Lewes District, East Sussex
- Glyndebourne, East Sussex
- Goodwood, Westhampnett, West Sussex
- Goring-by-Sea, Borough of Worthing, West Sussex
- Graffham, Chichester District, West Sussex
- Gravetye Manor, near West Hoathly
- Great Dixter, Northiam, East Sussex
- Greatham, Horsham District, West Sussex
- Groombridge, Wealden District, East Sussex
- Guestling, Rother District, East Sussex
