HB may refer to any of the following:
1. Shorthand for hot babe, HB describes a female or male that someone finds attractive.
2. Shorthand for hurry back, HB can be used in chat as a way of telling someone else to hurry back from their leave.
3. HB is an abbreviation used for Hopebot.
4. HB is a common misspelling for HP, which is short for Hewlett-Packard.