Neath by-election, 1991

The Neath by-election, 1991 was a by-election held on 4 April 1991 for the British House of Commons constituency of Neath in Wales. It was won by the Labour Party candidate Peter Hain.

The seat had become vacant when the sitting Labour Member of Parliament (MP), Donald Coleman, died on 14 January 1991.

Peter Hain retained Neath easily for Labour, although there was a 14% swing to Plaid Cymru.