B
| Title | Date of creation | Surname | Current status | Notes |
|---|---|---|---|---|
| Barret of Iniscarry | 1631 | Baret | extinct 1648 | |
| Barrett of Newburgh | 1628 | Barett | extinct 1645 | first Baronet created Lord Barrett in 1627 |
| Barrett of Castlemore | 1665 | Barrett | extinct 1673 | |
| Barry of Dublin | 1775 | Barry | extinct or dormant c.1895 | |
| Bateson of Killoquin | 1789 | Bateson, Bateson-Harvey | extinct 1870 | |
| Bath of Athcarne | 1666 | Bath | extinct 1686 | |
| Batersby of Tyrone | 1687 | Batersby, Battersby, Badersby | dormant | |
| Bayly of Plas Newydd | 1730 | Bayly, Paget | extant | third Baronet had already succeeded as Baron Paget de Beaudesert in 1769, created Earl of Uxbridge in 1784; second Earl created Marquess of Anglesey in 1815 |
| Barnewall of Crickstown | 1623 | Barnewall | extant | |
| Bellew of Barmeath | 1688 | Bellew | dormant | seventh Baronet was created Baron Bellew in 1848; Baronetcy dormant, under review (11th Baronet died 1975) |
| Beresford of Coleraine | 1665 | Beresford | extant | fourth Baronet created Earl of Tyrone in 1746; second Earl created Marquess of Waterford in 1789 |
| Blaquiere of Ardkill | 1784 | Blaquiere | extinct 1920 | first Baronet was created Baron de Blaquiere in 1800 |
| Blackwood of Ballyleidy | 1763 | Blackwood | dormant | third Baronet succeeded as Baron Dufferin and Claneboye in 1800; Baronetcy dormant (10th Baronet died 1988) |
| Bellingham of Dublin | 1667 | Bellingham | extinct 1699 | |
| Blake of Galway | 1622 | Blake | extant | |
| Blundell of Edendeny | 1620 | Blundell | extinct 1756 | third Baronet created Viscount Blundell in 1720 |
| Blunden of Castle Blunden | 1766 | Blunden | extant | |
| Bond of Coolamber | 1794 | Bond | extinct 1823 | |
| Bond of Peckham | 1658 | Bond | extinct 1767 | |
| Borrows of Grangemellon | 1646 | Borrowes | extinct 1939 | |
| Boulen of Holland | 1623 | Boulen | extinct c. 1660 | |
| Bourke of Kilpeacon | 1645 | Bourke | extinct c.1707 | |
| Brabazon of Newpark | 1797 | Brabazon | extinct 1840 | |
| Bradstreet of Castilla | 1759 | Bradstreet | extinct 1924 | |
| Bramhall of Rathmullen | 1662 | Aylmer, Whitworth-Aylmer | extant | seventh Baronet succeeded as Baron Aylmer in 1766 |
| Brooke of Colebrooke | 1764 | Brooke | extinct 1785 | |
| Browne of Kishack | 1622 | Browne | extinct 1682 | |
| Browne of Palmerston | 1797 | Brabazon | extinct 1890 | |
| Browne of Molahiffe | 1622 | Browne | extinct 1952 | seventh Baronet created Earl of Kenmare in 1801 |
| Bulkeley of Dunlaven | 1672 | Bulkeley | extinct 1710 | |
| Burke of Glinsk | 1628 | Burke | extinct 1909 | |
| Burke of Marble Hill | 1797 | Burke | extant | |
| Burton of Pollacton | 1758 | Bradstreet | extinct 1902 | |
| Butler of Cloughgrenan | 1628 | Butler | extant | |
| Butler of Polestown | 1645 | Bourke | extinct or dormant c.1762 |
Read more about this topic: List Of Baronetcies In The Baronetage Of Ireland