Ferns can refer to:

  • Fern, any of many groups of Pteridophyta in the plant kingdom
  • Ferns, County Wexford, a small historic town in north County Wexford, Ireland
  • The Roman Catholic Diocese of Ferns
  • The Bishop of Ferns and Leighlin (Church of Ireland)
  • The Bishop of Ossory, Ferns and Leighlin (Church of Ireland)
  • Ferns Inquiry, an Irish government inquiry into allegations of clerical sexual abuse in the Irish Catholic Diocese of Ferns