MNN may refer to:
Madrid Nuevo Norte, an urban redevelopment programme Manhattan Neighborhood Network Medical News Network Mission Network News Menston railway station in the United Kingdom Minnesota Northern Railroad Mother Nature Network, a website Multifocal motor neuropathy, medical condition Maritime News Network, a radio news network owned by MBS Peace is Our Nation, a political coalition of Montenegro Mii News Network, a fictional news network in Tomodachi Life: Living the Dream