With rapid industrialization throughout the world wastes containing metals are directly or indirectly discharged into the environment leading to serious threat to organisms including man. Of late, attention has shifted to the use of biosorbants of biological origin especially microbes as both living and dead cells are able to uptake metal ions. Hence the present study was aimed at assessing the biosorption of three metals (Cd, Hg and Pb) using the cells of Oscillatoria limosa. Results indicate that the order of uptake of Cd, Hg and Pb was found to be the order of 82, 78 and 72% respectively. The study also indicated that the metal uptake appeared to be a concentration independent phenomenon where an increase in metal concentration resulted in an increased uptake of metal.