# List of baronetcies in the Baronetage of the United Kingdom: J

Peerages and baronetcies of Britain and Ireland :
| Extant | All |
| Dukes | Dukedoms |
| Marquesses | Marquessates |
| Earls | Earldoms |
| Viscounts | Viscountcies |
| Barons | Baronies |
| Baronets | Baronetcies |
| En, Ir, NS, GB, UK (extinct) ||
This is a list of baronetcies in the Baronetage of the United Kingdom. They have been created since 1801 when they replaced the baronetages in the Baronetage of Great Britain, and Baronetage of Ireland. This list is not currently complete.

## List of baronetcies in the Baronetage of the United Kingdom

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
| 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 Holmbury | 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 | |