Llanfihangel Aberbythych (Welsh pronunciationⓘ) is a community in Carmarthenshire, Wales.

[1] It is bordered by Llangathen, Llandeilo, Dyffryn Cennen, Llandybie, Gorslas and Llanarthney, all of which are in Carmarthenshire.

There is no village of Llanfihangel Aberbythych – the name is taken from St Michael's Church, which dates from 1849, at Golden Grove (Welsh: Gelli Aur), about 3 miles (5 km) south-west of Llandeilo.

An electoral ward of Carmarthenshire County Council with the same name exists.

This stretches north from the village and holds a total population of 1,851.