Rauceby Hospital, originally called Kesteven County Asylum, is a now-defunct mental institution in the parish of Quarrington, Lincolnshire, England.

Originally opened in 1902, the main hospital building was closed in 1997 and the site has since been redeveloped as Greylees.

[1] An isolation unit, built in 1919 on the western edge of the site was never used as such; instead it housed those residents working on the farm.

During its tenure as a burns unit plastic surgeon Archibald McIndoe worked at the facility, along with other members of the "Guinea Pig Club".

[1] After the introduction of Care in the Community in the early 1980s, the hospital went through a period of decline and finally closed in December 1997.