FNN

FNN may refer to:


 * False nearest neighbor algorithm
 * Farnborough North railway station, in England
 * Feedforward neural network
 * Financial News Network, a defunct American television network
 * Flat neighborhood network, a type of computer network
 * Fox News Network, U.S. cable news network
 * Fuji News Network, a Japanese television network
 * Fuzzy neural network
 * Fake news network, a mockery used for CNN primarily during and a while after the 2016 USA election.


 * Friday Night Nexus, a fictional wrestling gameplay series on YouTube by HeelDiggy