| Country: | IRL |
| Type: | R |
| Image Notes: | R619 crossing Clyda Bridge; the R619 continues to the left, while the R638 begins straight on. |
| Route: | 638 |
| Length Km: | 2.3 |
| Terminus A: | R619 at Quartertown Lower |
| Junction: | R620 at Gooldshill |
| Terminus B: | N20 at Quartertown Upper |
| Previous Type: | R |
| Previous Route: | 637 |
| Next Type: | R |
| Next Route: | 639 |
The R638 road is a regional road in northern County Cork, Ireland. It connects the R619 to the N20 south of Mallow.[1] [2] [3]