9900

9900 may refer to:


 * A.D. 9900, a year in the 10th millennium CE
 * 9900 BCE, a year in the 10th millennium BC
 * Texas Instruments TMS9900, an early, 1976, 16 bit microprocessor
 * Volvo 9900, a motor coach bus
 * BlackBerry Bold 9900, a touchscreen smartphone
 * Vermont Route 9900, a state highway
 * 9900 Llull, an asteroid in the Asteroid Belt, the 9900th asteroid registered; see List_of_minor_planets:_9001–10000