Leighton-Linslade was an urban district in Bedfordshire, England from 1965 to 1974. It comprised the single civil parish of Leighton-Linslade. Leighton-Linslade UD was created on 1 April 1965 coinciding with an adjustment to county boundaries which led to the disbanding of Leighton Buzzard Urban District in Bedfordshire and Linslade Urban District in Buckinghamshire. The new urban district encompassed the two original towns of Leighton Buzzard and Linslade which had become contiguous through industrial expansion and housing development and henceforth was treated for administrative purposes as a single town called Leighton-Linslade.