MSV

mSv or MSV may refer to:


 * Maize streak virus, a plant disease
 * Medium-speed vehicle, US category
 * Medium Systems Vehicle, a class of fictional artificially intelligent starship in The Culture universe of late Scottish author Iain Banks
 * Millisievert, radiation unit
 * Mississippi and Skuna Valley Railroad, 1925–2008, reporting mark
 * Mixed single vote, a type of electoral system
 * Mobile Satellite Ventures, US company
 * Modular Scalable Vest, a US military body armor vest
 * MotorSport Vision, a UK organisation
 * M. S. Viswanathan (1928–2015), Indian composer
 * Motor Stand-by Vessel, a merchant vessel name prefix
 * Museum of the Shenandoah Valley, US museum