Crowthorne is a large village and civil parish in the Bracknell Forest district of south-eastern Berkshire. It had a population of 6,711 at the 2001 census, which rose to 6,902 at the 2011 Census. A 2019 estimate put it at 7,565. Crowthorne is the venue of Wellington College, a large co-educational boarding and day independent school, which opened in 1859, and of Broadmoor Hospital, one of England's three maximum-security psychiatric hospitals, which lies on the eastern edge of the village.

Crowthorne was only a small hamlet until Wellington College was opened in 1859 and Broadmoor Hospital in 1863. Crowthorne railway station, originally Wellington College for Crowthorne Station, opened in 1860 and burgeoned quickly. In the 1960s, the Transport Research Laboratory established by the UK Government as the Road Research Laboratory (RRL) opened in Crowthorne. It was privatised in 1996.

At the 2001 census the village had a population of 6,711, which was estimated to have risen to 7,565 in 2019.

Crowthorne has a Site of Special Scientific Interest (SSSI) and local nature reserve called Heath Lake along its northern edge. Sandhurst to Owlsmoor Bogs and Heaths form an SSSI to the south-east with a nature reserve, Wildmoor Heath.

Between the village and Sandhurst to the south is a local nature reserve called Edgbarrow Woods.