In the present study, the adsorption of reactive dyes from aqueous solution by the aquatic macrophyte Chara vulgaris (C vulgaris) was evaluated. Effect of pH on dye adsorption was determined and the maximum adsorption capacities of C vulgaris were determined to be 11.3, 13.2, 16.2, 24.2, 32.6, 26.2, 35.2 and 31.4 mgg(-1) for Reactive Red 147 (at pH 2). Reactive Brown 19 (at pH 3), Reactive Yellow 160 (at pH 2), Reactive Blue 220 (at pH 2), Reactive Orange 30 (at pH 3), Reactive Blue 29 (at pH 2), Reactive Blue 171 (at pH 3) and Reactive Black 5 (at pH 2), respectively. The intraparticle diffusion model and pseudo-second order kinetic models were found to be suitable to describe reactive dye adsorption rates. Obtained experimental findings revealed that that the adsorption was governed by more than one mechanism.