1979 Dinefwr Borough Council election
An election to Dinefwr Borough Council was held in May 1979. It was preceded by the 1976 election and followed by the 1983 election. On the same day there was a UK general election and elections to the other district local authorities and community councils in Wales.
A small number of seats changed hands and it appeared that Plaid Cymru held the balance of power on the authority with Labour and the Independents winning a similar number of seats.