Alcoholic ketoacidosis is a common disorder in chronic alcoholic persons. The Pathogenesis is complex associated with extracellular fluid volume depletion, alcohol withdrawal, abdominal pain, and acid abnormalities. The syndrome is rapidly reversible and has a low mortality. The treatment is administration with normal saline, glucose, potassium and thiamine. We report two cases of Alcoholic Ketoacidosis, first case with classically picture of AKA and the second one AKA with Decrease consciousness and concomitant illness, pneumonia. We believe this report possibly to be the first report of AKA in Indonesia