Blochmannia endosymbionts, belonging to Gammaproteobacteria, live in bacteriocytes, which are specialized cells for these bacterial species in the Camponotus genus (carpenter ants). In this announcement, we describe the complete genome sequence of the Blochmannia endosymbiont of Camponotus nipponensis, which originated from a C. nipponensis colony collected in the Republic of Korea.