Ahab (869–850 BC) was a Hebrew king.
Ahab may also refer to:
- Captain Ahab, a character in the novel Moby-Dick
- Ahab (band), a German funeral doom metal band founded in 2004
- "Ahab the Arab", a song by Ray Stevens
- Ahab (prophet), an impious prophet in the time of the Babylonian captivity of Judah (Book of Jeremiah 29:21)