Lionel Tollemache, 5th Earl of Dysart (6 August 1734 – 20 February 1799) was a Scottish nobleman, styled Lord Huntingtower from birth until 1770. Lord Huntingtower received no settlement from his father at his majority, and, feeling he owed him nothing, married without his knowledge or consent. The bride was Charlotte, daughter of Sir Edward Walpole, whom he married on 2 October 1760. Charlotte's uncle Horace Walpole called Huntingtower "a very handsome person". He succeeded to the earldom a decade later.