Saint Acisclus (also Ascylus, Ocysellus; Spanish: Acisclo; French: Aciscle) (died 304) was a martyr of Córdoba, in Hispania (the Iberian Peninsula, i.e., modern Portugal and Spain).

There is doubt about the historical veracity of Victoria's existence, but both martyrs were honored in the Mozarabic liturgy.

One tenth century passio relates that the Roman prefect of Córdoba, Dion, an "iniquitous persecutor of Christians," had Acisclus and Victoria cast into a fiery furnace.

However, when he heard Acisclus and Victoria sing songs of joy from within the furnace, Dion had them bound to stones and cast into the Guadalquivir.

Acisclus, along with his sister Victoria, are patron saints of Córdoba, and their cult was venerated throughout Hispania and southern France, especially in Provence.