Blue Bell Hill is a chalk hill between Maidstone and Rochester in the English county of Kent. It overlooks the River Medway and is part of the North Downs. Settlements on the hill include the Walderslade suburb of Chatham and the villages of Blue Bell Hill and Kit’s Coty. During the eighteenth and nineteenth centuries much of the hill was quarried for chalk.

The hill is a 5-hectare (12-acre) nature reserve which is managed by Kent Wildlife Trust. It is also part of the Kent Downs Area of Outstanding Natural Beauty and Wouldham to Detling Escarpment Sites of Special Scientific Interest and is a Nature Conservation Review site, Grade I.