555 (disambiguation)
555 stands for:
- 555 (year)
- 555 BC Chr.
- 555 (phone number) , which is a digit string of a national phone number in the United States
- Bundesautobahn 555 , the Cologne-Bonn motorway
- NE555 , an integrated circuit for timing measurements
- State Express 555 , British brand tobacco
- ZIL-MMZ-555 , Soviet truck model
