Acute kidney injury (AKI) was frequently encountered complication among intensive care unit (ICU) patients and recognized as a major public health problem. The present study aimed to determine the basic features of AKI patients admitted to ICU. A retrospective cohort study was conducted among 106 AKI patients admitted to ICU, Hospital Universiti Sains Malaysia from January 1, 2007 until the end of December 2013. The AKI patients ranged from 18 to 80 years old with the mean (standard deviation) of 58.93 (15.76) years, 60.4% were male and 91.5% were Malay ethnicity. Hypertension and diabetes were in 38.1% and 28.8%, respectively. The median (interquartile range) length of ICU stay was 4.50 (9.00) days. Eighty-two patients (79.6%) were classified as the Acute Kidney Injury Network (AKIN)-I, 12 (11.7%) as AKIN-II, and nine (8.7%) as AKIN-III. Sepsis was the common etiology among AKI patients (74.3%). Twenty-four patients (22.9%) required dialysis and 90.5% were mechanically ventilated. In conclusion, AKI developed more in male patients, Malay ethnicity, presented with comorbid, caused by sepsis, admitted to ICU, required mechanical ventilation, and need for renal replacement therapy.