3H (disambiguation)
# 3H (disambiguation)

$^3H$ is a symbol for tritium.

3H or 3-H may also refer to:

* 3H, or British Rail Class 205
* 3H Movement, a liberal Turkish youth organization
* 3H Biomedical, a Swedish biotechnology company
* Mu-3H, a model of Mu (rocket family)
* Yuri 3H, a Broadcasting Satellite (Japanese)
* SSH 3H (WA), alternate designation for Washington State Route 27
* Old Natchez Trace (230-3H); see Old Natchez Trace segments listed on the National Register of Historic Places
