Knebworth is in Hertfordshire.

Knebworth is a village and civil parish in the north of Hertfordshire, England immediately south of Stevenage. The civil parish covers an area between the villages of Datchworth, Woolmer Green, Codicote, Kimpton, Whitwell, St Paul's Walden and Langley, and encompasses the village of Knebworth, the small village of Old Knebworth and Knebworth House.

There is evidence of people living in the area as far back as Neolithic times and it is mentioned in the Domesday Book of 1086 where it is referred to as Chenepeworde (the farm belonging to the Dane, Cnebba) with a population of 150. The original village, now known as Old Knebworth, developed around Knebworth House. Development of the newer Knebworth village started in the late 19th century centred a mile to the east of Old Knebworth on the new railway station and the Great North Road (subsequently the A1, and now the B197 since the opening of the A1(M) motorway in 1962).

Knebworth has, since 1974, been famously associated with numerous major open air rock and pop concerts which have been held in the grounds of Knebworth House.

On 16 June 1990 the village was twinned with the commune of Chatelaillon-Plage in France.