Ticehurst is both a village and a large civil parish in the Rother district of East Sussex, England. The parish lies in the upper reaches of both the Bewl stream before it enters Bewl Water and in the upper reaches of the River Rother flowing to the south-east. The parish includes the parish wards of Ticehurst, Flimwell and Stonegate. The linear settlements of Berner's Hill and Union Street lie between Ticehurst and Flimwell. It lies to the south-east of Tunbridge Wells, and is about ten miles (16 km) distant.

Ticehurst is not mentioned in the Domesday Book of 1086; the manor came into being in the 14th century. Pashley Manor is also mentioned at the same time, and is within the parish.

The village's name derives from Old English; there are two possible derivations. The most plausible one is that it means ‘wood on the Teise’ from the river; the second roughly translates as 'The wooded hill where young goats graze', ticce(n) + hyrst. (1248, Tycheherst)

Ticehurst was a centre of the Wealden ironworking industry.

Ticehurst is part of the electoral ward called Ticehurst and Etchingham. The population of this ward at the 2011 census was 4,679.

There is an active village club, which runs regular social events, and a monthly newsletter "News & Views" which is produced by a team of volunteers. The village school serves both Ticehurst and Flimwell. There is also a comprehensive website covering most of the activities in the community.

Ticehurst House Hospital (now part of the Priory Group) specialises in the treatment of psychiatric disorders and is located on the western edge of the village. Samuel Newington opened the original Ticehurst House in 1792, as a place dedicated to the care and treatment of psychiatric illness.

The Victorian hymn composer, John Bacchus Dykes—he composed Melita ('Eternal Father Strong to Save') among other tunes—spent his last years as a patient in Ticehurst House.