The fifteenth election to Glamorgan County Council, south Wales, took place in March 1934. It was preceded by the 1931 election and followed by the 1937 election.

By the 1930s, Labour had secured a comfortable majority on the council, and dominated the aldermanic bench. The 1934 election saw little change.

There were no boundary changes at this election.

Many candidates were returned unopposed.^[1]

Most of the retiring aldermen were returned. However, two conflicts arose when retiring councillors sought the nomination at the expense of retiring aldermen, at Hopkinstown and Newcastle.

Labour retained their majority, losing only one seat, at Pencoed.^[2] Their victory in the rural Cowbridge ward reflected their domination of county politics.

In addition to the 66 councillors the council consisted of 22 county aldermen. Aldermen were elected by the council, and served a six-year term. Following the 1934 election, there were twelve Aldermanic vacancies (one vacancy due to the recent death of a sitting alderman).^[3]

The following retiring aldermen were re-elected:

• William Bowen (Lab, Llanfabon)
• David Daniel Davies (Lab, Pontardawe)
• Rose Davies (Lab, Aberaman)
• John Evans (Lab, Maesteg)
• Johnson Dicks (Lab, Abercynon)
• E.H. Fleming (Lab, Hopkinstown)
• William Jenkins (Lab, Glyncorrwg)
• Caradoc Jones (Lab, Llandeilo Talybont)
• David Lewis (Lab, Tylorstown)
• John Thomas (Lab, Port Talbot)
• Rev D.H. Williams (Ind, Barry)

Eleven vacancies were caused by the election of aldermen.

A by-election was held following the elevation of the Rev. Degwel Thomas to fill a vacancy on the aldermanic bench. Charles Percival Huins, a pioneer of the Labour movement in the Neath area and a former national president of the Shop Assistants Union^[4] comfortably held the seat by an unexpectedly large majority.^[5]