5B

5B may refer to :
* Trans International Express IATA code designator
* Little Joe 5B, an unmanned Launch Escape System test of the Mercury spacecraft
* Studio 5-B, a 1989 short-lived drama series about a Canadian TV news channel
* A term used on the internet. It connotates that one is aware that one was wrong. One has gained new insight and will now change ones position. It is often a term of respect. As in, that guy was big enough to go 5b.

5b may refer to :
* Corot-Exo-5b, an extrasolar planet
* WASP-5b, an extrasolar planet

ee also

* List of highways numbered 5B