John Maitland (later Lauder), 5th Earl of Lauderdale (1655 – 30 August 1710, both at Haltoun House, Ratho, Midlothian, Scotland) was a Scottish judge and politician who supported the Acts of Union.
Foster is unclear on dates but says that he definitely assumed the designation of John Lauder of Haltoun in lieu of Maitland of Ravelrig.
On 30 July 1680 he was admitted to the Faculty of Advocates, and on 16 November 1680 he was created a Baronet of Nova Scotia.
[1] He is recorded as Member of Parliament for Edinburghshire from 12 March 1685 to 1686 and was on the Convention in 1689, all as Sir John Lauder of Haltoun, and again in parliament from 1689 to 1693 as Sir John Maitland of Ravelrig.
About 1690 he was appointed Colonel of the Edinburghshire Militia, and was General of The Mint in 1699.