EFN may refer to:

• Environmentalists for Nuclear, a pro-nuclear power non-profit organization
• EBMA Festival Network, of which the European World of Bluegrass is a member festival
• Education for Nature, founded by the World Wildlife Foundation on behalf of Russell E. Train
• Electronic Frontier Norway [no; nn], a member of the European Digital Rights advocacy group
• Element Fleet Management Corp.; see Companies listed on the Toronto Stock Exchange (E)
• Environmental Funders Network, cofounded by English environmentalist Ben Goldsmith
• European Federation of Nurses Associations, of which Beverly Malone is a member
• European Folk Network, a member of the European Music Council

• DJ EFN, real name Eric Fernando Narciandi (born 1975), an American record label executive and DJ
• Extrafloral nectaries, nectar-secreting plant glands other than those in flowers
• Entitlement First Nations, a group of indigenous tribes of which Mathias Colomb First Nation is one
• EXA Financial Network, part of EXA Infrastructure
• "The Experience of Fred Neech", a 2014 mixtape by American rapper Driicky Graham

This disambiguation page lists articles associated with the title EFN.
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