RLV

RLV9 can refer to:


 * Reusable launch vehicle, the general concept of Reusable launch vehicles (to space)
 * Reusable Launch Vehicle program (NASA), a cancelled NASA program that included the X33 experimental craft
 * RLV-TD, India's Reusable Launch Vehicle - Technology Demonstrator project
 * Relevium Technologies Inc, Stock Symbol: RLV
 * Restrained Life Viewer for Second Life
 * Defence of the Reich, the World War II German Reichsluftverteidigung (RLV) defensive aerial campaign
 * RLV College of Music and Fine Arts, Kerala, India