The title of Marquess of Lothian was created in the Peerage of Scotland in 1701 for the 4th Earl of Lothian. The current Marquess of Lothian is the 13th, better known as the Conservative politician Michael Ancram.

Lord Lothian holds the subsidiary titles of Earl of Lothian (created 1606), Earl of Lothian (created again 1631), Earl of Ancram (1633), Viscount of Briene (1701), Lord Newbottle (1591), Lord Jedburgh (1622), Lord Kerr of Nisbet, Lougnewtoun, and Dolphinstoun (1633), Lord Ker of Newbottle, Oxnam, Jedburgh, Dolphinstoun and Nisbet (1701), and Baron Ker, of Kersheugh in the County of Roxburgh (1821), all but the last in the Peerage of Scotland. As Baron Ker in the Peerage of the United Kingdom, previous Marquesses sat in the House of Lords before 1963, when Scottish peers first sat in the House of Lords in their own right.

Earls of Lothian (1606)

• Mark Kerr, 1st Earl of Lothian (1553-1609)
• Robert Kerr, 2nd Earl of Lothian (d. 1624)
• William Kerr, 3rd Earl of Lothian (1605-1675)¹
• Robert Kerr, 4th Earl of Lothian, 3rd Earl of Ancram (1636-1703) (became Marquess of Lothian in 1701)

Marquesses of Lothian (1701)

• Robert Kerr, 1st Marquess of Lothian (1636-1703)
• William Kerr, 2nd Marquess of Lothian (1661-1722)
• William Kerr, 3rd Marquess of Lothian (1690-1767)
• William Henry Kerr, 4th Marquess of Lothian (1713-1775)
• William John Kerr, 5th Marquess of Lothian (1737-1815)
• William Kerr, 6th Marquess of Lothian (1763-1824)
• John William Robert Kerr, 7th Marquess of Lothian (1794-1841)
• William Schomberg Robert Kerr, 8th Marquess of Lothian (1832-1870)
• Schomberg Henry Kerr, 9th Marquess of Lothian (1833-1900)
• Robert Schomberg Kerr, 10th Marquess of Lothian (1874-1930)
• Philip Henry Kerr, 11th Marquess of Lothian (1882-1940)
• Peter Francis Walter Kerr, 12th Marquess of Lothian (1922-2004)
• Michael Andrew Foster Jude Kerr, 13th Marquess of Lothian (better known as Michael Ancram) (born 1945)

Heir Presumptive: his brother Lord Ralph William Francis Joseph Kerr (b. 1957)

¹The 3rd Earl married the daughter of the 2nd Earl, and was created Earl in his own right in 1631.