S
| Title | Date of creation | Surname | Current status | Notes |
|---|---|---|---|---|
| Sands of Dublin | 1676 | Sands | extinct c. 1704 | |
| Sarsfield of Carrickleamlery | 1619 | Sarsfield | forfeit 1691 | first Baronet created Viscount Sarsfield in 1627 |
| Shaen of Kilmore | 1663 | Dowdall | extinct 1725 | |
| Shee of Dunmore | 1794 | Shee | extinct 1870 | |
| Smyth of Tinny Park | 1776 | Smyth | extinct 1797 | |
| Somerville of Somerville | 1748 | Somerville | dormant | fifth Baronet created Baron Athlumney in 1863, which title became extinct in 1929; Baronetcy dormant (second Baron and sixth Baronet died in 1929) |
| Southwell of Castlemattress | 1662 | Southwell | extant | second Baronet created Baron Southwell in 1717 |
| St George of Carrickdrumrusk | 1660 | St George | extinct 1735 | second Baronet created Baron St George in 1715 |
| St George of Woodsgift | 1766 | St George | extant | |
| Staples of Lissone | 1628 | Staples | extant | |
| Staunton of Cargins | 1785 | Staunton | extinct 1859 | |
| Steele of Hampstead | 1768 | Steele | extinct or dormant 1876 | |
| Stewart of Ramalton | 1623 | Stewart | extant | |
| Style of Beckenham | 1624 | Style | extinct 1659 |
Read more about this topic: List Of Baronetcies In The Baronetage Of Ireland