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Background: Despite their biocompatibility, metal implants are susceptible to infections, leading to implant failure and patient complications. The purpose of this study was to investigate the antibacterial potential of antibiotic-coated titanium and stainless steel implants. Methods: The study was designed as an experimental in vitro study, and it was conducted at the Department of Immunology of the University of Health Sciences, Istanbul/ Turkiye in January and February 2024. Pieces of titanium and stainless steel were coated with gentamicin, teicoplanin, rifampicin and a combination of rifampicin and gentamicin using a dipping method. Antibacterial activity against Staphylococcus epidermidis and Staphylococcus aureus was assessed using zone of inhibition (ZOI) measurements. Results: Both titanium and stainless steel implants displayed significant ZOI values for all antibiotic treatments, indicating effective inhibition of bacterial growth. The combination of gentamicin and rifampicin exhibited the largest ZOI for both implants. Conclusions: Antibiotic-coated titanium and stainless steel implants demonstrate promising potential for reducing implant-associated infections. Further research is needed to optimise the coating method, explore combination therapies and evaluate the long-term efficacy of this approach in clinical settings. [ABSTRACT FROM AUTHOR]