List of baronetcies in the Baronetage of the United Kingdom: O

Peerages and baronetcies of Britain and Ireland

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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 of Baronetage of Great Britain and Baronetage of Ireland. This list is not currently complete.

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Title	Date of creation	Surname	Current status	Notes
O'Brien of Ardtona[1]	1916	O'Brien	extinct 1916	first Baronet created Baron Shandon in 1918
O'Brien of Kilfenora[2]	1891	O'Brien	extinct 1914	first Baronet created Baron O'Brien in 1900
O'Brien of Merrion Square and Borris-in-Ossory[3]	1849	O'Brien	dormant	Lord Mayor of Dublin; sixth Baronet died 1982
O'Loghlen of Drumcanora[4]	1838	O'Loghlen	extant
O'Malley of Rosehill[5]	1804	O'Malley	extinct 1892
O'Connell of Lakeview[6]	1869	O'Connell	extant
O'Neill of Cleggan[7]	1929	O'Neill	extant	first Baronet created Baron Rathcavan in 1953
Oakes of Hereford	1815	Oakes	extinct 1927	first Baronet had already been created a Baronet in 1813, which creation became extinct in 1822
Oakes of Nassau[8]	1939	Oakes	extant
Oakes of the Army	1813	Oakes	extinct 1822	first Baronet obtained a new patent in 1815, which creation became extinct in 1927
Oakshott[9]	1959	Oakshott	extant	first Baronet created a life peer as Baron Oakshott in 1964, which title became extinct in 1975
Ochterlony of Ochterlony	1823	Ochterlony	extinct 1964	had already been created Baronet of Pitforthy in 1816, which title became extinct in 1825
Ochterlony of Pitforthy[10]	1816	Ochterlony	extinct 1825	also created Baronet of Ochterlony in 1823, which title became extinct in 1964
Ogle of Worthy[11]	1816	Ogle	extinct 1940
Ohlson of Scarborough[12]	1920	Ohlson	extant
Oppenheimer of Stoke Poges[13]	1921	Oppenheimer	extant
Ormsby of Cloghans[14]	1812	Ormsby	extinct 1833
Orr-Ewing of Ballikinran[15]	1886	Orr-Ewing	extant
Orr-Ewing of Hendon[16]	1963	Orr-Ewing	extant	first Baronet created a life peer as Baron Orr-Ewing in 1971, which title became extinct in 1999
Orr-Lewis of Whitewebbs Park[12]	1920	Orr-Lewis	extinct 1980
Osler of Norham Gardens[17]	1911	Osler	extinct 1919
Otway of Brighthelmstone[18]	1831	Otway	extinct 1912
Ouseley of Claremont[19]	1808	Ouseley	extinct 1889
Outram of The Bengal[20]	1858	Outram	extant
Owen of Orielton[14]	1813	Owen	extinct 2002

References

1. The London Gazette: no. 29483. p. 1946. 22 February 1916.
2. The London Gazette: no. 26207. p. 5086. 29 September 1891.
3. The London Gazette: no. 21013. p. 2669. 28 August 1849.
4. The London Gazette: no. 19631. p. 1488. 3 July 1838.
5. The London Gazette: no. 15712. p. 765. 19 June 1804.
6. The London Gazette: no. 23544. p. 5446. 8 October 1869.
7. The London Gazette: no. 33509. p. 4189. 25 June 1929.
8. The London Gazette: no. 34651. p. 5392. 4 August 1939.
9. The London Gazette: no. 41764. p. 4465. 14 July 1959.
10. The London Gazette: no. 17082. p. 2328. 21 November 1815.
11. The London Gazette: no. 17102. p. 133. 23 January 1816.
12. The London Gazette: no. 31830. p. 3432. 19 March 1920.
13. The London Gazette: no. 32257. p. 2092. 15 March 1921.
14. The London Gazette: no. 16663. p. 2189. 31 October 1812.
15. The London Gazette: no. 25564. p. 1027. 2 March 1886.
16. The London Gazette: no. 43041. p. 5533. 28 June 1963.
17. The London Gazette: no. 28566. p. 9826. 29 December 1911.
18. The London Gazette: no. 18851. p. 1898. 16 September 1831.
19. The London Gazette: no. 16185. p. 1303. 20 September 1808.
20. The London Gazette: no. 22190. p. 4433. 12 October 1858.