Greensand, or green sand, is a sand or sandstone which has a greenish color.

Greensand or green sand may also refer to:

Places England Greensand Ridge, an escarpment Greensand Ridge Walk, a long-distance path Greensand Way, a long-distance path

United States Greensand, New Jersey, an unincorporated community Green Sand Beach or Papakolea Beach, Hawaii

Other uses Green sand (casting), slightly damp sand, used in sand casting of metals Olivine sand, which can form green sand beaches Project Greensand aims to store captured on the ocean floor of Denmark's North Sea region

See also Lower Greensand Group, a geological unit in southeast England