Abstract: This research studied the sorption capacity of Brachystegia eurycoma seeds (BES) for the removal of heavy metal ions from waste water. The plant seeds was immobilized by entrapping or caging the bio-sorbent within a polymeric matrix of calcium-alginate to produce immobilized Brachystegia eurycoma seeds (IBES) .The sorption efficiencies of heavy metals (Fe2+, Pb2+, Cr2+, Cd2+, Cu2+and Mn2+) were investigated in aqueous solution using the IBES and the residual metal ions in solution was determined using atomic absorption spectrophotometer (AAS). The effect of various parameters such as contact time, pH, ionic strength, initial metal ion concentration and temperature variation on the sorption of the above metal ions were investigated using batch experiments. The result obtained showed that the sorption efficiencies of Pb2+, Cr3+, Cu2+, Cd2+, Fe2+ and Mn2+ by IBES were 97.50%, 67.44%, 81.48%, 98.09%, 79.50% and 94.00% respectively. Result also shows that metal ion sorption increases with increase in contact time; initial metal ion concentration and increase in pH, and decreases with increase in ionic strength. In view of the above result, the abundant but presently wasted Brachystegia eurycoma seeds can be used as a low-cost sorbent for the removal of heavy metal ions in waste water.