This study aimed to investigate the ecological risk level of İzmir Inner Gulf. Based on the findings, port, industry, settlement and transportation activities generated Mo, Pb, Cu, Cd, Zn enrichment. Modified hazard quotient (MHQ) point to a high level of pollution and toxic effects for Ni and Cr; significant pollution and toxic effects for As and Hg, and moderate pollution and toxic effects for Pb, Zn, Cu. According to the ecological contamination index (ECI), the inner gulf is significantly-highly polluted. Toxic risk index (TRI) and potantial ecological risk index (PERI) are also consistent with these data. According to the ECI, the inner gulf is significantly/highly polluted. TRI and the PERI are also consistent with these data. Cd has created a significant ecological risk in all seasons due to its high toxicity. Cu and Pb have caused moderate ecological risk in local areas near the port. A moderate potential ecological risk has been identified in all seasons throughout the inner gulf.