1981 Mid Glamorgan County Council election

The 1981 Mid Glamorgan County Council election was held in May 1981 and were the third elections to Mid Glamorgan County Council, electing 85 councillors. They were preceded by the 1977 elections and followed by the 1985 elections.

Aberdare No.1: Llwydcoed (two seats)
Labour comfortably held both seats. Plaid Cymru, who held a seat in the ward from 1973 to 1977, did not field a candidate.

Caerphilly No.4 (one seat)
Bertie Rowland, a long-serving Labour councilor on the former Glamorgan County Council, regained the seat that he narrowly lost four years previously.

Penybont No.2 (one seat)
Walters had previously represented the neighbouring Penybont No.1 Ward which was also lost by the Conservatives.