MyNetworkTV (sometimes written My Network TV, and unofficially abbreviated MyNet, MyTV, MYN-TV, MNT, or MNTV) is a television network in the United States, owned by the Fox Broadcasting Company, a division of News Corporation. It is the lowest-rated of the six major US English-language commercial broadcast networks.

The network began operations on September 5 2006 with an initial affiliate lineup covering about 96 percent of the country, most of which are former WB and UPN affiliates. Its original primetime format consisted of hour-long soap operas (the first two being Desire and Fashion House) that aired on a five-nights-per-week, 13-week pattern.

After failing to attract viewership with that format, the network revamped its schedule in 2007 to a lineup aimed towards young males (a la Spike), with movies and mixed martial arts reducing telenovelas to one night per week. The network no longer produces original scripted programming.

MyNetworkTV is a sister network to the Fox network, but operates separately. Roger Ailes oversees the network as chairman of the Fox Television Stations Group (FTSG). Greg Meidel, the network's president, supervises its day-to-day operations, along with Fox executives Jack Abernethy, Dennis Swanson, and Bob Cook.

It was announced on Tuesday, February 26, 2008 that MyNetworkTV will be the new home of WWE Friday Night SmackDown! starting in September 2008, after The CW and WWE decided not to renew their programming agreement. The program had been among the highest rated on that network, and the addition of the program to the MyNetworkTV schedule is a homecoming of sorts, as the majority of MyNetwork stations were originally UPN affiliates.