<p>Titanium implants are widely used in orthopedics, but their long-term performance is often limited by poor bone bonding, corrosion in body fluids, and bacterial infection. Although HAp coatings improve bioactivity, they usually lack sufficient mechanical strength and antibacterial ability. To overcome these limitations, a multifunctional composite coating was developed on Ti substrates using mineral-substituted HAp reinforced with PLA and HNTs. The coating was prepared by an electrochemical deposition method. Structural and chemical analyses confirmed the formation of nanocrystalline apatite with successful incorporation of Mg²⁺, Zn²⁺, PLA, and HNTs without secondary phases. Microscopy showed a dense, uniform, and porous scaffold-like structure with strong adhesion to the Ti surface. Compared with uncoated Ti, the M-HAp/PLA/HNT-coated substrate exhibited balanced wettability, lower surface roughness, improved thermal stability, and higher microhardness. Electrochemical tests in SBF demonstrated enhanced corrosion resistance and reduced metal ion release. In addition, the coating showed effective antibacterial activity against <i>E.coli</i>. The combined use of the M-HAp/PLA/HNT composite resulted in a mechanically stable, corrosion-resistant, and bioactive coating, making it a promising surface modification for orthopedic implant applications.</p> Graphical abstract <p></p>