QBU

QBU or QBUS may refer to:


 * QBU-191, a Chinese designated marksman rifle
 * QBU-10, a Chinese anti-materiel sniper rifle
 * QBU-88, a Chinese designated marksman rifle
 * QBU, a nickname for the University of Miami Hurricanes football program
 * Q-Bus, a technology used with PDP and MicroVAX computer systems
 * QBUS Cambuslans, a BT site engineering code
 * Qualified business unit, an accounting concept