B
- Baal (Diablo role-playing game series)
- Overlord Baal, the Tyrant of Terror (Nippon Ichi)
- Babau (Dungeons & Dragons fantasy game)
- Bacarra (Charmed TV series)
- Bahumat (fablehaven series)
- Bughuul (Sinister movie)
- Bai Tza (Jackie Chan Adventures TV series)
- Bal'lak the Pummeller (RuneScape online role-playing game)
- Balor (Dungeons & Dragons fantasy game)
- Balthazar (Charmed TV series)
- Balthazar (Constantine)
- Baphomet (Doom video game series)
- Baraka (Mortal Kombat)
- Barakiel (Lineage II)
- Barbariccia (Dante's Inferno)
- Barbas (Charmed TV series)
- Bartimaeus (Jonathan Stroud, Bartimaeus Trilogy)
- Bat'Zul (City of Villains)
- Mrs Baylock (The Omen)
- The Banshee, (Strange)
- Beastie (FreeBSD logo)
- Be'lakor the Dark Master and other Daemons (Rick Priestley, Warhammer tabletop games)
- Ben (Creepypasta)
- Bebilith (Dungeons & Dragons fantasy game)
- Beelzebub (Umineko no Naku Koro Ni)
- Beleth (Lineage II)
- Belfagor (Belfagor arcidiavoloby Machiavelli)
- Belial (Diablo series)
- Belphegor (Umineko no Naku Koro Ni)
- Belthazor (Charmed TV series)
- Berry & Cherry (Sanrio, Lloromannic fantasy world), a.k.a. the Devilish Demon Duo
- The Boogeyman, (Boogeyman film series)
- Betelguese (Beetlejuice)
- Blackheart (Marvel Comics)
- Burning Legion (Warcraft III: Reign of Chaos)
Read more about this topic: List Of Fictional Demons