WAB or Wab may refer to:

  • Wab language, an Austronesian language
  • Wab Kinew (born 1981), Canadian politician
  • Wabash Railroad
  • Warhammer Ancient Battles, a tabletop wargame
  • Weebl and Bob
  • Weekend at Bernie's, 1989 film
  • Wengernalpbahn railway in Switzerland
  • Werkverzeichnis Anton Bruckner, a catalogue of Anton Bruckner's works edited by Renate Grasberger
  • Western Academy of Beijing, an international school in Beijing, China
  • Western Aphasia Battery
  • Windows Address Book
  • Warwickshire Association for the Blind
  • European Union (Withdrawal Agreement) Bill 2017–19
  • Workers' Aid for Bosnia
  • "W.A.B" (an acronym of Weak-Ass Bitch), a song by Megan Thee Stallion from her mixtape Fever