Lydd is a town and electoral ward in Kent, England, lying on Romney Marsh.

Lydd reached the height of its prosperity during the 13th century, when it was a corporate member of the Cinque Ports, a "limb" of Romney.

Notable buildings in Lydd include the Gordon house longhall, a guildhall, and a medieval courthouse.

[4] The town reached the height of its prosperity during the 13th century, when it was a corporate member of the Cinque Ports, a "limb" of Romney.

At one time it had an extensive narrow gauge railway network, and the area is still an important training ground for the armed forces.

It has surviving concrete acoustic mirrors, developed during World War II to detect aircraft before radar was perfected.

In September 1940, four young Dutch men landed on the coast between Hythe and Dungeness in a rowing boat.

He had been using the recently invented equipment devised to interrupt the homing beams sent from Germany to guide such planes.

The resulting jet of high pressure steam from the engine hit the plane, causing it to crash-land nearby.

[11] Lydd church, with its tall tower, was a major link in the chain of trigonometric measuring points for the Anglo-French Survey (1784–1790).

All Saints' Lydd was the main intermediate point on the south coast between Fairlight Down to the west and Dover Castle to the east.

The parish encompasses four electricity industry sites: Dungeness A & B Nuclear Power Stations, a substation of the National Grid, and a former static inverter plant used by the HVDC Cross-Channel between 1961 and 1984.

Local news and television programmes are provided by BBC South East and ITV Meridian.

Lydd is also served by the county-wide stations Heart, Gold, and BBC Radio Kent.

It is now an online service called Shoreline Easy, serving Romney Marsh, Rye, and Hythe.

[23] The day features a funfair, boot fair in the morning, stalls and children's dressing up in the afternoon, and floats in the evening.

The evening ends with a firework display and the lit up funfair, as well as the annual crowning of the Queen Elect.

{citation needed|date=November 2024}} The event was created in 2006 by local residents Jason James, David Usher and Ian Parrot, and friends in the Royal Mail pub.

[citation needed] By being included in the Folkestone and Hythe district Local Plan, the station is protected against development that could be prejudicial to the reopening of the line from Appledore to the public.

[26] David Denne (1799–1861), of the family of that name from Lydd, was an English first-class cricketer, Deputy Lieutenant and Justice of the Peace for the County of Kent, and formerly Captain of the East Kent and Cinque Ports Yeomanry, and Bailiff of the town Corporation 23 times.

He was noted for his controversial religious views, and is notable for his book Rusticus ad Academicos: The Rusticks Alarm to the Rabbies.