| Country: | IRL |
| Photo Notes: | R342 passing St. James' Church, Cashel. |
| Type: | R |
| Route: | 342 |
| Length Km: | 7.8 |
| Terminus A: | R341 Derryadd West (Doire Fhada Thiar) |
| Terminus B: | R340 Lettershinna (Leitir Seanaidh) |
The R342 road is a regional road in Ireland, located in southern County Galway, part of the Carna Road.[1] [2]