9000 may refer to:
9000 (number) The last year of the 9th millennium, an exceptional common year starting on Wednesday
Business ISO 9000, a family of standards for quality management systems TL 9000, a quality management system
Entertainment BFG 9000, a fictional weapon HAL 9000, a fictional computer
Technology IBM ES/9000, a mainframe computer IBM System 9000, a family of microcomputers HP 9000, a family of workstation and server computers VAX 9000, a mainframe computer Nokia 9000 Communicator, a smart phone introduced in 1996 ATI Radeon 9000, a computer graphics card series
Transport 9000 series (disambiguation), Japanese, Korean, Latin America and Spanish train types Saab 9000, an executive car
Other 9000 Hal, an asteroid It's Over 9000!, an internet meme