Halstead is a village and civil parish in the Sevenoaks District of Kent, England.

Botanist and photographer Anne Atkins lived since 1841 to her death at Halstead Place, where she is buried.

Author Edith Nesbit spent some of her adolescence in Halstead during the 1870s and her book The Railway Children is thought to be based on her time living in a house, Halstead Hall, whose garden is about a mile and a half from the railway line.

The parish is adjacent to Fort Halstead, a government defence research centre that is thought to have developed Britain's first atomic bomb.

Halstead is served by London Buses routes R5 and R10 which provide connections to Orpington, Cudham and Knockholt.