543 (disambiguation)
# 543 (disambiguation)

543 was a year.

543 may also refer to:

* 543 (number)
* 543 BC
* List of United States Supreme Court cases, volume 543
* List of highways numbered 543
* List of state leaders in 543
* 543 Charlotte
* Unit 543
* Area code 543
* The 5-4-3 rule for configuring Ethernet networks
