6600

6600 may refer to:
 * CDC 6600, a mainframe computer from Control Data Corporation, first manufactured in 1965
 * Nokia 6600, a Nokia smartphone released in 2003
 * Nokia 6600 fold, a Nokia mobile phone released in 2008
 * Nokia 6600 slide, a Nokia mobile phone released in 2008
 * , an Nvidia graphics card
 * Compaq Presario 6600 Desktop PC (HP) computers
 * Audiovox Audiovox ppc6600, a powerpc based pda/cellphone
 * The year in the 7th millennium