10,000 is the natural number following 9,999 and preceding 10,001.
10000 may also refer to:
- 10,000 AD, the last year in the 10th millennium and 100th century, a century leap year starting on Saturday
- Myriad
- Ten Thousand, a group of Greek mercenary units
- LNER Class W1, a famous experimental steam locomotive in the United Kingdom
- British Rail Class D16/1, named LMS No. 10000 and 10001 were the first mainline diesel locomotives built in Great Britain
- Dice 10000, a family dice game similar to Farkle
- 10,000 Dawns, a science fiction series published by Arcbeatle Press