<p>Corrosion, fouling, and wear problems seriously endanger ocean engineering equipment. Traditional coatings were insufficient to solve the aforementioned problems simultaneously. Here, we develop a Co-CeO₂@MoS₂ composite coating with improved resistance to fouling, wear, and corrosion resistance by a simple electrodeposition technique. Morphological, structural, and performance variations of Co-CeO₂@MoS₂ composite coatings with increasing concentrations of CeO₂@MoS₂ are systematically investigated. Results show that the synergistic effect of self-lubricating soft MoS₂ sheets and high load-bearing capacity of hard CeO₂ particles provides the composite coating with remarkable friction reduction and wear resistance. In addition, the physical labyrinth effect of MoS₂ and the chemical inhibition effect of CeO₂ endows the composite coating with excellent anti-corrosion properties. Moreover, CeO₂@MoS₂ exhibits antibacterial adhesion behavior and provides the composite coating with excellent antifouling performance. The Co-CeO₂@MoS₂ composite coating deposited with 1.0&#xa0;g/L CeO₂@MoS₂ exhibits the best resistance to wear, corrosion, and fouling. This work provides a simple strategy for constructing coatings with remarkably comprehensive performance for marine applications.</p> Graphical abstract <p></p>