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.

Royal Leamington Spa, commonly known as Leamington Spa or simply Leamington, is a spa town and civil parish in Warwickshire, England. Originally a small village called Leamington Priors, it grew into a spa town in the 18th century following the popularisation of its water which was reputed to have medicinal qualities. In the 19th century, the town experienced one of the most rapid expansions in England. It is named after the River Leam, which flows through the town.