Grierson may refer to:
Clan Grierson, a Scottish clan Grierson (name), a surname (including a list of people with the name) Grierson (film), a 1973 Canadian documentary Grierson, a GWR 3031 Class steam locomotive of the Great Western Railway Grierson family of BC/AB/NB/NS (possible the hiers to the Grierson clan baronetage)
See also Grierson's Raid, an 1863 Union cavalry raid during the Vicksburg Campaign of the American Civil War Grierson Spring (Texas), in Reagan County Grierson Awards, a British documentary film award