Leicester Viney Vernon (1798 – 14 April 1860) was a British Conservative Party politician from Berkshire.
He was originally Leicester Viney Smith. Elected as Member of Parliament (MP) for Chatham in Kent a by-election in June 1853, after the result of the 1852 general election in the constituency were overturned on petition. Vernon's by-election victory was itself the subject of a petition, which he did not defend, but the petition was subsequently withdrawn.
At the next general election, in 1857, he stood instead in Berkshire, where did not win a seat. He was returned to the House of Commons after a two-year absence at the 1859 general election, when Berkshire's 3 MPs were elected unopposed. He died the following year, aged 61.
From his uncle Robert Vernon he inherited Ardington House, in Ardington, Berkshire.