WHD may refer to: Observances World Health Day, a public health education day designated by the World Health Organization. World Humanitarian Day, a day designated by the United Nation. World Hypertension Day, a public health education day was initiated to increase the awareness of hypertension.
Other uses Wafer Handling Diffusion, a machine used to load/unload solar wafers into/from a diffusion furnace. Wage and Hour Division, a division of the United States Department of Labor. Werdnig–Hoffmann disease, an infantile-onset type of spinal muscular atrophy. West Hampstead railway station, London, National Rail station code. WHD-TV, a defunct Washington. D.C. experimental digital television station, that was active from 1996 until 1999. WHD (AM), a defunct Morgantown, West Virginia radio station, licensed from 1922 until 1923.