Refractive index (n) is an optical property of the matters which can be measured by various methods. The objective of this work was to design and fabricate apparatus for refractive index measurement using the Snell’s law and the laser refracted light through different media. The apparatus were composed of laser light source, transparent glass box for fill the desired liquid for refractive index measurement; reflected mirror for refracted laser beam and the screen for identified the refracted laser beam position. The refractive index determined from this apparatus was used only, distance of glass box to the screen, the height of refracted laser beam on the screen and the angle between the mirror and laser beam. The measurements the refractive index of water, glycerin and ethyl alcohol were found to be about 1.30–1.33, 1.43–1.49 and 1.26 – 1.27, respectively.