10000 can refer to:
- 10000 (number) (and any usage of that number)
- The year 10,000 in the 10th millennium
- Ten Thousand (Greek), a group of mercenary units
- 10,000 BC (film), a film
- 10,000 Maniacs, a rock band from the 1980s
- 10,000 Days, the 2006 album from the progressive metal band Tool
- Ten Thousand Fists, an album from hard rock band Disturbed
- 10,000 metres, an event raced by long distance athletes
- The "Ten Thousand", the final 10,000 prisoners of war returned to West Germany from the Soviet Union in 1955
- Dice 10,000, a game played with six dice.
- 10,000 servers, the scale of systems management delivered by UCS Central across multiple domains of Cisco Unified Computing System