- Lowe
- Lower
- Lowerison
- Lowes
- Lowman
- Lowry
- Lowry-Corry
- Lowther
- Andrew (1894 - 1986)
- Andrew (circa 1919 - circa 1919)
- Anthony, (the Hon.) (before 1700 - 1741)
- Barbara, (the Hon.) (before 1700 - 1716)
- Elizabeth, (the Hon.) (1680 - 1736)
- Henry, 3rd Viscount Lonsdale (the Right Hon.) (1694 - 1751)
- Hilda E. (1893 - )
- Jane, (the Hon.) (before 1700 - 1752)
- John, 1st Viscount Lonsdale, P.C., F.R.S. (the Right Hon.) (1655 - 1700)
- Katherine (1653 - 1713)
- Margaret, (the Hon.) (1691 - 1728)
- Margaret Elizabeth (circa 1898 - circa 1919)
- Mary, (the Hon.) (circa 1676 - 1706)
- Richard, 2nd Viscount Lonsdale (the Right Hon.) (1692 - 1713)
- Rosalie
- Lowthorp
- Lowton
- Loxton
- Lubbock
- Lucas
- Lucas-Tooth
- Lucchesi-Palli
- Luce
- Luck
- Lucker
- Luckett
- Luckham
- Luckis
- Ludlam
- Ludlow
- Ludwell
- Luebbert
- Luen
- Anne (between 1834 and 1835 - circa 1923)
- Mary Ann (between 1828 and 1829 - )
- William (between 1824 and 1825 - circa 1909)
- Luff
- Lujan
- Luke
- Lukehurst
- Ann (before 1786 - )
- John (before 1786 - )
- Luker
- Lukes
- Lukhurst
- Lulham
- Lumb
- Lundberg
- Lundburgh
- Lunn
- Lunnon
- Lunt
- Lupton
- Lurfield
- Luscomb
- Lush
- Lusted