VMO

VMO can refer to:
 * Vlaamse Militanten Order (the Order of Flemish militants)
 * Vastus medialis obliquus (a muscle)
 * VMO, maximum operating speed of an aircraft, see V speeds
 * VMO, designation of observation squadrons of the US Marine Corps
 * 'Views my own' – a disclaimer
 * Vanishing mean oscillation in mathematics