he present study demonstrates that dry olive mill residue (DOR) water extracts can be used as nutrients and carbon sources for the production of bacterial cellulose. Although BC was obtained in lower yields than those reported with the reference medium HS, the results are promising since we are dealing with low value residues without any kind of nutri- tional supplementation. Furthermore the BC production yields reported here are, so far, the highest in a process using industrial residues and G. sacchari bacterium. So, this work opens good perspectives for future valorization studies of these residues by producing a biomaterial with unique prop- erties such as bacterial cellulose.