Shigella species usually produce self-limited gastrointestinal infections that rarely result in extraintestinal complications. Urirary tract infections (UTI) due to Shigella species are rare and Shigella sonnei UTI are particularly unusual. I report a case of asymptomatic UTI due to S. sonnei which was isolated from urine of a 56-year-old female complaining of fever, diarrhea and abdominal pain. S. sonnei was also isolated from stool of the patient. Shigella UTIs are reviewed. (Korean J Clin Microbiol 2002;5:137-138)