The Irish state has officially approved the following List of National Monuments in County Carlow. In the Republic of Ireland, a structure or site may be deemed to be a "National Monument", and therefore worthy of state protection, if it is of national importance. If the land adjoining the monument is essential to protect it, this land may also be protected.
| NM# | Monument name | Description | Image | Townland | Location |
|---|---|---|---|---|---|
| 347 | Aghade (Cloghaphoill) | Holed Stone | Aghade | ||
| 351 | Ballyloughan Castle | Castle | Muine Bheag | ||
| 486 | Ballymoon Castle | Castle | Muine Bheag | ||
| 566 | Baunogenasraid | Burial Mound (Cist) | Baunogenasraid | ||
| 306 | Carlow Castle | Castle | Carlow | ||
| 545 | Castlemore | Motte & Bailey & Cross Slab | Castlemore | ||
| 613 | Browneshill | Portal Tomb | Carlow | ||
| 393 | Killoughternane | Church | Killoughternane | ||
| 603 | Rathvilly Moat | Burial Mound | Knockroe | ||
| 438 | Leighlinbridge Castle | Castle | Leighlinbridge | ||
| 350 | Lorum | Cross Fragment | Lorum | ||
| 352 | Nurney | Cross | Nurney | ||
| 3 | St. Mullin's | Early Medieval Ecclesiastical Site | St Mullin's | ||
| 452 | Straboe | Medieval Grave Slab | Straboe |
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