- bulrush
- bung, to go
- bungy
- bunga
- bunt
- bunya-bunya
- bunyip
- burnet, native
- burnett salmon
- burnt-stuff
- bur
- burramundi
- burwan
- burrawang
- bush
- bush-faller
- bush-fire
- bush-lawyer
- bush-magpie
- bushman
- bushmanship
- bushranger
- bush-ranging
- bush-scrubber
- bush-telegraph
- bushwoman
- bush-wren
- bushed
- bustard
- buster, southerly
- butcher
- butcher-bird
- buttercup
- butter-fish
- butterfly-conch
- butterfly-fish
- butterfly-lobster
- butterfly-plant
- button-grass
- buzzard
- cabbage garden
- cabbage-palm
- cabbage-tree
- cabbagites
- cabbage-tree mob
- cad
- caddie
- cadet
- caloprymnus
- camp
- camphor-wood
- canajong
- canary
- candle-nut
- cane-grass
- cape-barren goose
- cape-barren tea
- cape lilac
- cape weed
- caper-tree
- cooker
- Captain Cook
- carbora
- cardamom
- carp
- carpet-shark
- carpet-snake
- carrier
- carrot, native
- cascarilla, native
- cassowary
- casuarina
- cat-bird
- cat-fish
- cat, native
- catholic frog
- cat's eyes
- cat's-head fern
- catspaw
- cat's tail
- cattle-bush
- cattle-duffer
- cattle-racket
- caustic-creeper
- caustic-vine
- caustic-plant
- cavally
- cedar
- celery, australian
- celery-topped pine
- centaury, native
- centralia
- cereopsis
- channel-bill
- cheesewood
- cherry, herbert river
- cherry, native
- cherry-picker
- chestnut pine
- chewgah-bag