Cumnock South and Old Cumnock (ward)

Cumnock South and Old Cumnock was one of 30 electoral wards of East Ayrshire Council. Originally created in 1984, the ward was initially within Cumnock and Doon Valley District Council before the local government reforms in the 1990s. The ward elected one councillor using the first-past-the-post voting electoral system.

The ward was a Labour stronghold as the party successfully held the seat at every election. David Sneller was the only councillor elected as he represented the ward from 1984 to 1999.

In 1999, the ward was abolished with the majority of the area represented by the ward was placed into the new Ochiltree, Skares, Netherthird and Craigens ward. The remainder of the ward was split between the Auchinleck, Cumnock East and Cumnock West wards.