SCA

SCA may refer to:

== Biology and health == Sickle cell disease, also known as sickle cell anaemia Spinocerebellar ataxia, a neurological condition Statistical coupling analysis, a method to identify covarying pairs of amino acids in protein multiple sequence alignments Sudden cardiac arrest, a condition in which the heart suddenly stops beating, leading to sudden cardiac death Superior cerebellar artery, a major blood supplier to the cerebellum