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
See also
990 (disambiguation) 900 (disambiguation) 90 (disambiguation)