An optical coating material, an optical film and an optical substrate are provided. The optical coating material includes 15 wt % to 40 wt % of resin, 1 wt % to 10 wt % of nano-dispersion solution and 40 wt % to 70 wt % of organic solvent. The resin is at least one selected from a group consisting of polyurethane acrylate resin, epoxy resin, acrylate resin and acrylic polyol resin. The nano-dispersion solution includes nanoparticles. The nanoparticles includes aluminum oxide, zirconium oxide, titanium oxide or silicon oxide.