B letter viruses: Scroll down the page and choose the desired name:
Backdoor.Death.25
Back Orifice
BadTrans
Bagle
Bagle.A
Bagle.B
Bagle.C
Bagle.D
Bagle.E
Bagle.F
Bagle.G
Bagle.H
Bagle.I
Bagle.J
Bagle.K
Bath
BBV
Beagle
Beagle.A
Beagle.B
Beagle.C
Beagle.D
Beagle.E
Beagle.F
Beagle.G
Beagle.H
Beagle.I
Beagle.J
Beagle.K
BlackBox
BlackWindow
Blaster
BleBla
Bluemountain Greetings HOAX
BO
BOClient
BOServe
Boot
Boot.437
BootDr79
Braid
Brain
Bridex
Bubbleboy
Britney
Bugbear.A
Bugbear.B
Bud Frogs HOAX
Burglar
Bymer

Legend: - Apple/Macintosh | - Windows 32-bit systems | - DOS-based systems | - Unix/Linux
Note: a 16-bit system infector may sometimes affect a 32-bit system.

Also see: Hoax Encyclopedia

If you are unable to find a description for a particular virus and you've also determined that it is not listed in the Hoax Encyclopedia, please post a message in the forum.