Ferrimonas balearica Rossello-Mora et al. 1996 is the type species of the genus Ferrimonas, which belongs to the family Ferrimonadaceae within the Gammaproteobacteria. The species is a Gram-negative, motile, facultatively anaerobic, non spore-forming bacterium, which is of special interest because it is a chemoorganotroph and has a strictly respiratory metabolism with oxygen, nitrate, Fe(III)-oxyhydroxide, Fe(III)-citrate, MnO(2), selenate, selenite and thiosulfate as electron acceptors. This is the first completed genome sequence of a member of the genus Ferrimonas and also the first sequence from a member of the family Ferrimonadaceae. The 4,279,159 bp long genome with its 3,803 protein-coding and 144 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.