Knockholt is a village and civil parish in the Sevenoaks District of Kent, England, lying approximately south of Orpington and northwest of Sevenoaks. It lies on the border line of Kent and Greater London. According to the 2001 census it had a population of 1,166. The village is located at 51°18'36" north 0°6'18" East.
The village is mostly a ribbon development, surrounded by fields that are a part of the Green Belt. There is mixed arable farming. It is in a hilly, rural location, on the top of the dip slope of the North Downs, and has views over London.