Cusset-Sud was a canton of the arrondissement of Vichy, Allier, Auvergne, France. It had 14,976 inhabitants (2012).
The canton was created in 1985 by scission of canton of Cusset. It includes 7 communes (list below) and fraction of Cusset.
The canton has been disbanded in March 2015 due to French departmental elections.
The canton consisted of the following communes: