A transparent wavelength-selective retroreflector (100) that retroreflects light within a specific wavelength range and is transparent to visible light. A transparent wavelength-selective retroreflector allows visible light to pass therethrough and selectively retroreflects light within a specific wavelength range. One preferred embodiment of a transparent, wavelength-selective retroreflector includes an optical structure layer (101) that is made of a light transmissible material and a wavelength selective reflective layer (102). At least one of the front or rear surfaces includes a cube corner structure, such as cube-corner type trigonal pyramids, cube-corner type cavities, cube-corner type trigonal pyramids with reflective layers, cube-corner type cavities with reflective layers, and the like.