Alconbury Weald is a new settlement in Cambridgeshire, England, lying to the north-west of the town of Huntingdon. The site was previously part of RAF Alconbury, with planning permission for the first phase of the new settlement being granted in 2014. Cambridgeshire County Council moved its headquarters from Cambridge to New Shire Hall at Alconbury Weald in 2021.

History
The Royal Air Force station at Alconbury opened in 1938, and was subsequently also used from 1942 by the United States Army Air Force, with operations continuing at the base after the Second World War had ended. By 2009 flying operations from the base had ceased, although the American air force continued to use part of the site. Most of the redundant land at RAF Alconbury, including the former runway, was sold to a development company, Urban and Civic, in 2009 for £27.5 million.

The old airfield had straddled the civil parishes of Alconbury (after which it was named) and The Stukeleys, with many of the buildings on the site closely adjoining the village of Little Stukeley. The parish boundaries were redrawn in April 2010 to put the whole of the site into the parish of The Stukeleys.