Wei-Hao Wang (CFHT) Finding Dust-Hidden Galaxies---A Multi-Wavelength Adventure Abstract: Dust particles in galaxies can significantly alter the spectral energy distribution of the galaxies, by absorbing the ultraviolet radiation and re-emitting the absorbed energy in the far-infrared. While there are techniques that can recover the absorbed radiation in optical observations (aka extinction correction), there exit galaxies whose dust extinction is so huge that these galaxies cannot be detected in deep optical observations. To fully account for the radiation generated in the processes of galaxy formation and evolution, it is therefore necessary to conduct multiwavelength observations of distant galaxies. My research in the past 10 years have been centered on observing dust-hidden galaxies, using telescopes on Maunakea and in the space. I will highlight several of my past works, with some emphases on those conducted with CFHT.