Objectives: Acute kidney injury (AKI) is a clinical condition that is frequently encountered during admission to an intensive care unit (ICU). Theaim was to answer the question of whether critically ill elderly patients with AKI who were admitted to ICU had a higher mortality than youngerpatients with AKI.Materials and Methods: All patients admitted to ICU were screened for the presence of AKI for one year. These patients were divided into twogroups depending on their age: Patients