Ferns could be

• the plural of fern, a pteridophyte plant that reproduces using spores rather than seeds.
• Ferns, a small historic town in north County Wexford, Ireland.
• Ferns Inquiry. On 22 October 2005 a government-commissioned report compiled by a former Irish Supreme Court judge delivered a damning indictment of the handling of clerical sex abuse in the Irish diocese of Ferns.