Acinetobacter baumannii, a gram-negative, ubiquitous bacteria present in the soil, water and on the skin surface of human beings and animals, is responsible for bronchopneumonia and bacteremia in immuno- compromised and severely illed people, but rarely represents a problem in healthy individuals. We report a case of bacteremia due to Acinetobacter baumannii in a 45-year-old women who underwent percutaneous nephrolithotomy for staghorn calculi.