Typical Klebsiella pneumonia with mucous sputum is known as an opportunistic nosocomial infection. However, computed tomographic study of limiting in Klebsiella pneumonia is rare. We report three types of chest computed tomography (CT) findings for Klebsiella pneumonia. Case 1 shows typical lobar pneumonia (Friedlander pneumonia), Cases 2 and 3 show acute bronchopneumonia with subclinical aspiration, and Case 4, chronic Klebsiella pneumonia with typical cavitary lung abscesses. Of these four cases of Klebsiella pneumonia, three developed in the right lung, as determined radiologically, but esophagogastroduodenoscopy indicated that the lesions of Case 3 had developed in the left lingula and upper lobe.