J
| Title | Date of creation | Surname | Current status | Notes |
|---|---|---|---|---|
| Jackson of Arlsey | 1815 | Jackson | dormant | sixth Baronet died 1980 |
| Jackson of Birkenhead | 1869 | Jackson, Mather-Jackson | extant | |
| Jackson of Fort Hill | 1813 | Jackson | extinct 1851 | |
| Jackson of Stansted House | 1902 | Jackson | extant | |
| Jackson of Wandsworth | 1935 | Jackson | extinct 1937 | |
| Jackson of Wimbledon | 1913 | Jackson | extant | |
| Jaffray of Edgehill | 1931 | Jaffray | extinct 1953 | |
| Jaffray of Skilts and Park Grove | 1892 | Jaffray | extant | |
| James of Dublin | 1823 | James | extinct 1979 | Lord Mayor of Dublin |
| Jameson of Down Street | 1911 | Jameson | extinct 1917 | |
| Jardine of Castle Milk | 1885 | Jardine, Buchanan-Jardine | extant | |
| Jardine of Godalming | 1916 | Jardine | extant | |
| Jardine of Nottingham | 1919 | Jardine | extinct 1965 | |
| Jarvis of Hascombe | 1922 | Jarvis | extinct 1965 | |
| Jehanghir of Bombay | 1908 | Jehanghir | extant | |
| Jejeebhoy of Bombay | 1857 | Jejeebhoy | extant | |
| Jenks of Cheape | 1932 | Jenks | extant | Lord Mayor of London |
| Jenner of Harley Street | 1868 | Jenner | extinct 1954 | |
| Jephcott of East Portlemouth | 1962 | Jephcott | extant | |
| Jephson-Norreys of Mallow | 1838 | Jephson-Norreys | extinct 1888 | |
| Jephson of Spring Vale | 1815 | Jephson | extinct 1900 | |
| Jervoise, later Clarke-Jervoise of Idsworth | 1813 | Jervoise, Clarke-Jervoise | extinct 1933 | |
| Jessel of Ladham House | 1883 | Jessel | extant | |
| Jessel of Westminster | 1917 | Jessel | extinct 1990 | first Baronet created Baron Jessel in 1924 |
| Johnson-Ferguson of Springhall and Wiston | 1906 | Johnson-Ferguson | extant | |
| Johnson of Bath | 1818 | Johnson | dormant | sixth Baronet died 1986 - under review |
| Johnson of Dublin | 1909 | Johnson | extinct 1918 | |
| Johnston of London | 1916 | Johnston | extinct 1933 | Lord Mayor of London |
| Joicey of Chester-le-Street | 1893 | Joicey | extant | first Baronet created Baron Joicey in 1906 |
| Jolliffe of Merstham | 1821 | Jolliffe | extant | first Baronet created Baron Hylton in 1866 |
| Jones Brydges of Boultibrook | 1807 | Jones Brydges | extinct 1891 | |
| Jones-Parry of Madryn Castle | 1886 | Jones-Parry | extinct 1891 | |
| Jones of Cranmer Hall | 1831 | Jones, Lawrence-Jones | extant | |
| Jones of Pentower | 1917 | Jones | extinct 1952 | |
| Jones of Rhyll | 1926 | Jones, Probyn-Jones | extinct 1951 | |
| Jones of Treeton | 1919 | Jones | extant | |
| Joseph of Portsoken | 1943 | Joseph | dormant | Lord Mayor of London; second Baronet created a life peer as Baron Joseph in 1987, which title became extinct in 1994; second Baronet died 1994 |
| Joseph of Stoke-on-Trent | 1942 | Joseph | extinct 1951 | |
| Joynson-Hicks of Newick | 1919 | Joynson-Hicks | extant | first Baronet created Viscount Brentford in 1929 |
| Joynson-Hicks of Newick | 1956 | Joynson-Hicks | extant | first Baronet succeeded as Viscount Brentford in 1958 |
| Judkin-Fitzgerald of Lisheen | 1801 | Judkin-Fitzgerald | extinct or dormant 1917 |
Read more about this topic: List Of Baronetcies In The Baronetage Of The United Kingdom