Mearns can refer to
- Mearns Academy
- Mearns, Alberta
- Mearns Castle
- Mearns Castle High School
- Mearns FM
- Mearns Primary School
- Kincardineshire, the County of Kincardine, The Mearns in Scotland
- Newton Mearns
in biology:
- Edgar Alexander Mearns (1856-1916), American ornithologist and field naturalist
- Mearns's Flying Fox
- Mearns's Pouched Mouse
- Chihuahuan Grasshopper Mouse or Mearns's Grasshopper Mouse
- Montezuma Quail or Mearns Quail
- Mearns's Squirrel
People with the last name Mearns:
- David Mearns (b. 1958), a United States-born marine scientist
- Frederick Mearns (1879-1931) a British footballer
- Ian Mearns a British Labour Party politician
- Randy Mearns (b. 1969) is a Canadian former lacrosse player
- Sara Mearns, New York City Ballet principal dancer
- William Hughes Mearns (1875-1965), American educator and poet
- Máel Petair of Mearns