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The potential hazard to human health from exposure to toxic metals and polycyclic aromatic hydrocarbons (PAHs) in street dust was assessed using thirty street dust samples collected from Abadan, an industrial city in Southwest Iran. The mean concentration of Pb, Zn, Cu, Cr, Cd, Ni, V, As and Co in the street dust was: 59, 288, 113, 50, 0.5, 57, 36, 7.1 and 7.5 (mg/kg), respectively. The majority of potentially toxic metals were elevated compared to background concentrations, with the exception of Co and V. Mean enrichment factors decreased in the following order: Zn > Pb > Cu > Cd > As > Cr > Ni > Co > V, with a high enrichment value for Zn and Pb. Cadmium had a moderate potential ecological risk compared to other toxic metals. Correlation coefficients and principal component analysis (PCA) identified three principal groups as sources of toxic metals in Abadan street dust. Metals such as Cr, Ni …