An election to Dinefwr Borough Council was held in May 1987.
On the same day there were elections to the other district local authorities and community councils in Wales.
There were a number of boundary changes and some wards were renamed although remaining essentially unchanged.
The ward used to be known as Llanegwad and Llanfynydd .
The ward used to be known as Llandeilo Fawr North The ward used to be known as Llanddeusant and Myddfai Boundary Change Boundary Change The ward used to be known as Glynamman Boundary Change