Heavy metal effluence in water as well as soil is an important environmental distress because of its harmful effects on the environment and also on human beings. The improvement of methods for heavy metal elimination is of indefinite significance. Bionanohybrids, which associate the unique characteristics of biomaterials or biopolymers through bioactive components or nanoparticles, have arisen as capable constituents for heavy metal elimination. The synergistic effects of these mixed materials allow improved adsorption property, choosiness, and steadiness, building them extremely active in heavy metal elimination uses. This chapter conveys a summary of the capability of bionanohybrids for heavy metal elimination. It deliberates the numerous kinds of bionanohybrids, together with alginate-based bionanohybrids, as their combination. The mechanisms elaborated in heavy metal elimination are ion interchange, complexation, also chelation, etc. Moreover, the demonstration assessment of bionanohybrids is deliberated and additional constituents also practiced for heavy metal elimination. Lastly, the uses and upcoming forecasts of bionanohybrids in heavy metal exclusion are emphasized. This chapter underscores the prominence of bionanohybrids as capable materials for addressing the trials linked with heavy metal adulteration and the understandings for the progress of resourceful and justified solutions for eco-friendly remediation.