| Country: | Wales |
| Welsh Name: | Llanfihangel Llantarnam |
| Constituency Welsh Assembly: | Torfaen |
| Official Name: | Llantarnam |
| Coordinates: | 51.636°N -3.0056°W |
| Community Wales: | Llantarnam |
| Unitary Wales: | Torfaen |
| Lieutenancy Wales: | Gwent |
| Constituency Westminster: | Torfaen |
| Post Town: | CWMBRAN |
| Postcode District: | NP44 |
| Postcode Area: | NP |
| Dial Code: | 01633 |
| Os Grid Reference: | ST 305 935 |
| Area Total Km2: | 6.56 |
| Area Footnotes: | [1] |
| Population: | 4,125 |
| Population Ref: | (2011)[2] |
| Static Image Name: | The Greenhouse, Llantarnam - geograph.org.uk - 1639590.jpg |
| Static Image Caption: | The Greenhouse |
Llantarnam (Welsh: Llanfihangel Llantarnam) is a village of Cwmbran, and is a community and electoral ward in the county borough of Torfaen in south east Wales. The ward covers the same area as the community, but also includes Southville. It is equidistant from Cwmbran town centre and the town of Caerleon.
Llantarnam Abbey is a Cistercian abbey founded in 1179 as a daughter house of Strata Florida Abbey. The remains of that abbey are incorporated into the present buildings housing the Sisters of Saint Joseph. It also contains St Michael's Church.
Llantarnam Hall is home to Rougemont School.
In 2015 Llantarnam School amalgamated with Fairwater High School to make the new school ofCwmbran High School. https://www.southwalesargus.co.uk/news/11604498.merged-school-will-be-called-cwmbran-high-school/
At the 2011 Census
https://www.southwalesargus.co.uk/news/11604498.merged-school-will-be-called-cwmbran-high-school/ South Wales Argus - Article - Merged school will be called Cwmbran High School - 15/11/2014