Kersbrook is a town near Adelaide, South Australia. It is located in the Adelaide Hills Council local government area. At the 2006 census, Kersbrook had a population of 367. There is a primary school (opened 1961), general store and other small stores in the town of Kersbrook. Nearby Humbug Scrub and Mount Gawler are used for orienteering and mountain biking in quite steep terrain. About 10 km north of Kersbrook is the 353-hectare Warren Conservation Park, a rugged nature reserve with views over the Warren Gorge which was dedicated in 1966 and protects a range of rare fauna.