The aim of this paper is electrodeposition of Zn/CeO 2 and Zn-Mn/CeO 2 nanocomposite coatings. Four plating solutions were used (R1–R4). Solution R1 was without manganese ions, whereas solutions R2, R3, and R4 had Mn 2+ /Zn 2+ ratios of 1:1, 1:2, and 2:1, respectively. Electrodeposition is performed galvanostatically at 1 A dm −2 , 2 A dm −2 , and 4 A dm −2 current densities with ultrasonic bath assisted mixing. The morphology of the coatings was observed using optical and scanning electron microscopy, the chemical compositions were determined using energy dispersive x-ray spectroscopy, whereas electrochemical impedance spectroscopy and potentiodynamic polarization method were used to determine the corrosion resistance of the coatings. All the solutions yield compact coatings with a small grain size and surface roughness ranging from 0.6 to 1.47 μm at all current densities. The results suggest that with the increase in current density, the content of manganese in the coating decrease, whereas the content of CeO 2 particles increases in Zn-Mn/CeO 2 coatings. Corrosion resistance of the coatings obtained from R2, R3, and R4 solutions deposited at lower current densities is higher compared to the coatings deposited from solution R1. The coating with the highest corrosion resistance was obtained from solution R2 at 1 A dm −2 current density. Graphical Abstract