The influence of spherical beech cellulose (BuRe), a fibrous regenerated cellulose (FCP) and a nanoscale bacterial cellulose (BNC) was examined on the elastomeric properties in a S-SBR model mixture. All types of cellulose are suitable as elastomeric fillers. However, they should be used always modified to increase the compatibility between the hydrophilic cellulose and the hydrophobic elastomer matrix. The rein-forcing effect differs for each filler type in the order FCP>BuRe>BNC. The ad-vantages of the nanoscale of the BNC cannot be realized because of the essential grinding process that makes particle sizes macroscopic.