ZnO/SnO₂ nanocomposite thin films are prepared on glass substrates by spin coating and pulsed laser deposition (PLD) techniques, utilizing various ZnO/SnO₂ ratios. The fabricated thin films are exposed to annealing at 300°C to improve their crystallinity. The surface morphology, crystalline structure, and optical properties of the produced ZnO/SnO₂ nanocomposite thin films are examined. The FESEM pictures of ZnO and ZnO/SnO2 nanocomposite thin films fabricated via the spin coating process demonstrated an increase in particle size from 11 to 18 nm when the ZnO ratio increased from 50% to 90%. The minimum particle size for samples generated via PLD was 6.5 nm, achieved with a ZnO:SnO₂ ratio of 70:30. The XRD results indicated that the ZnO and ZnO/SnO₂ nanocomposite thin films, prepared via spin coating and PLD methods, exhibited the hexagonal wurtzite structure of ZnO and the tetragonal structure of SnO₂. The optical energy gap of pure ZnO produced by both methods was 3.2 eV, which increased to 3.8 eV for 50ZnO/50SnO₂ nanocomposite thin films prepared using the spin coating method. The energy gap of 70ZnO/30SnO₂ nanocomposite thin films was 3.7 eV when employing the PLD method.