Lillington is a suburb of Leamington Spa, in the civil parish of Royal Leamington Spa, in the Warwick District in the county of Warwickshire, England. Historically a village which existed before the time of the Domesday Book (1086), it was incorporated into the borough of Leamington in 1890. Lillington is a ward of Warwick District Council and Royal Leamington Spa Town Council.