TNM may refer to: TNM staging system, a cancer staging system Teniente R. Marsh Airport, the main airport in Antarctica Telekom Networks Malawi, a Malawian mobile telecommunications company Tetranitromethane, an organic oxidizer The Nameless Mod, a total conversion mod released in 2009 for the game Deus Ex Thomas Nelson (publisher) (NYSE stock symbol), a publishing firm that began in Scotland in 1798 Tokyo National Museum, the oldest and largest museum in Japan The News Minute, an Indian online publication Texas Nationalist Movement, a Texan political organization