Llanbadoc is a small village in Monmouthshire, Wales. Nearby towns and villages include Usk, Llanllywel, Llancayo, Rhayadr and Monkswood. Llanbadoc lies in the Usk valley across the river from the historic town of Usk.

There are few facilities in the village - a parish church, a garage, a saw mill, an open prison and an agricultural college.

The parish church of St Madoc sits on the banks of the River Usk. The eminent Victorian scientist, Alfred Russell Wallace was baptized in St Madoc's Church. A.R. Wallace and Charles Darwin, were the co-founders of the Theory of Evolution and in 1858, on Darwin's insistence, presented a joint paper on their findings to the prestigious Linnean Society. He was one of the 19th century's most remarkable intellectuals and the venerable naturalist outlived Darwin and became the grand old man of science until he died in 1913.

There are several pleasant walks around Llanbadoc and the Usk Valley Walk passes close by, albeit on the opposite bank of the River Usk.