MGX

MGX may refer to:
 * Magix, a German software company
 * MGM Energy, a Canadian oil company (TSX ticker: )
 * Montenegro Airlines (1994–2020, ICAO: )
 * Mysterious Girlfriend X, a Japanese manga (2004–2014)
 * Magnesium halide (MgX)
 * .MGX, a brand of Materialise NV, a Belgium 3D printers'