Connor O'Brien | |
|---|---|
| Viscount Clare | |
 | |
| Tenure | 1666–1670 |
| Successor | Daniel, 3rd Viscount Clare |
| Born | c. 1605 |
| Died | 1670 |
| Spouse(s) | Honora O'Brien |
| Issue Detail | Daniel, & others |
| Father | Daniel, 1st Viscount Clare |
| Mother | Catherine FitzGerald |
Connor O'Brien, 2nd Viscount Clare (c. 1605 – 1670) was the son of Daniel O'Brien, 1st Viscount Clare and Catherine FitzGerald, a daughter of Gerald, 14th Earl of Desmond.