Llangattock is a village in Powys, Wales. The village (Welsh: Llangatwg) lies south west of Crickhowell, south east of Tretower, North west of Abergavenny and north east of Rassau. Nearby towns and villages include Fawyddog, Cwrt-Y-Gollen, Glangrwyneg, Llangynidr and Llanbedr.

The Monmouthshire and Brecon Canal winds its way past Llangattock on its way through 35 miles of peaceful countryside from Brecon to Cwmbran. Set almost entirely within the Brecon Beacons National Park, the canal is among the most beautiful anywhere on the waterways.

The Usk Valley Walk follows the canal tow path on this section of its 48 mile (77km) route through the beautiful Vale of Usk. Follow the trail and visit the market towns of Caerleon, Usk, Chain Bridge, Llanvihangel Gobion, Llanellen, Abergavenny, Govilon, Llangattock, Crickhowell, Llangynidr, Aber, Talybont on Usk and Brecon.

The 157 acre Craig y Cilau National Nature Reserve lies to the south west of Llangattock. The limestone escarpment sits in the Brecon Beacons National Park and was declared a National Nature Reserve for its importance to wildlife, particularly plants. It is situated on the north side of Mynydd Llangatwg, about 1 mile south-west of the village. The Reserve is popular with both nature lovers and bird watchers and there are numerous caves and disused quarries along the escarpment. The limestone cliffs are home to many scarce plants including maiden pink, hutchinsia, and the most southerly British population of alpine enchanter's nightshade. About 50 species of bird breed on the reserve including ring ouzel and raven on the cliffs and redstart, wood warbler and pied flycatcher in the woods. One of the caves, Agen Allwedd, holds a roost of lesser horseshoe bats during the winter months.