Tonbridge is a market town in Kent, England, on the River Medway, 4 miles (6 km) north of Royal Tunbridge Wells, 12 miles (19 km) south west of Maidstone and 29 miles (47 km) south east of London. In the administrative borough of Tonbridge and Malling, it had an estimated population of 41,293 in 2019.

Kent is a county in the South East England region, the closest county to continental Europe. It borders Essex across the entire estuary of the River Thames to the north; the French department of Pas-de-Calais across the Strait of Dover to the south-east; East Sussex to the south-west; Surrey to the west and Greater London to the north-west. The county town is Maidstone.