Gypsum is a soft mineral composed of calcium sulfate dihydrate.
Gypsum may also refer to:
Places Gypsum, Bhutan, a village
United States Gypsum, Colorado, a home rule municipality Gypsum, Kansas, a city Gypsum Township, Saline County, Kansas Gypsum Township, Sedgwick County, Kansas Gypsum, Ohio, an unincorporated community Gypsum Creek, a stream in Kansas Gypsum Wash, a wash or stream in Nevada
See also Richard Gypson (c. 1811 – ?), English balloonist