Capnocytophaga species are facultative anaerobic, capnophilic, fusiform, gram-negative bacilli exhibiting gliding motility; they are normal inhabitants of the oropharyngeal flora [1]. In addi- tion, they are opportunistic pathogens associated with periodon- tal diseases and animal bites, causing systemic infection in both immunocompetent and immunocompromised hosts [2, 3]. To date, 9 species have been described in the genus Capnocyto- phaga , including C. canimorsus , C. cynodegmi , C. ochracea , C.
gingivalis , C. sputigena , C. haemolytica , C. granulosa , C. lead- betteri , and genospecies AHN8471 [4]. Infections caused by Capnocytophaga species are infrequent, and species-level bio- chemical identification is difficult; thus, case reports of C. sputi- gena infection are rare [5-15]. We report a case of C. sputigena bacteremia in a patient with a hematologic malignancy.