The present study was conducted to investigate the capsular serogroups and distribution of toxA gene of Pasteurella (P.) multocida isolated from pneumonic lung lesions of swine in Korea. A total number of 91 (36.3%) P. multocida isolated from 251 lung lesions. P. multocida isolates were typed for capsular serogroup and toxA gene by polymerase chain reaction. Of the 91 strains, serogroup A and D were 69 strains (75.8%) and 22 strains (24.2%), respectively. Sixty one strains (67.0%) out of 91 strains were detected as toxA gene, and 47 strains (77.0%) and 14 strains (23.0%) belongs to serogroup A and D, respectively.