1977 Mid Glamorgan County Council election

The 1977 Mid Glamorgan County Council election was held in May 1977 and were the second elections to Mid Glamorgan County Council, electing 85 councillors. It was preceded by the 1973 election and followed by the 1981 election.

Bridgend (two seats)
Alfred Bowen, who had represented Bridgend on the old Glamorgan County Council prior to re-organization, lost his seat to the Conservatives.

Caerphilly No.4 (one seat)
Lindsay Whittle unseated Bertie Rowland, who had represented Caerphilly on the former Glamorgan County Council.

Gelligaer No.2 (one seat)
Davies was elected as an Independent Labour candidate in 1973.