WHD

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 experimental digital television station.