Borneo elephant 
Borneo flying frog 
Borneo River Toad 
Bosc's Fringe-toed Lizard 
Botel gecko 
Botrylloides leachii 
Botta's pocket gopher 
Boulenger's Climbing Frog 
Boulenger's Giant Treefrog 
Boulenger's Giant Treefrog 
Boulenger's Green Anole 
Bourke's Parrot 
Bowmouth Guitarfish 
Bowring's Supple Skink 
Boyds Forest Dragon 
Bradfields hornbill 
Bradfields swift 
Brahminy blind snake 
Brahminy kite 
Brahminy Starling 
Brain Ascidian 
Bramble shark 
Brambling 
Bran-colored flycatcher