- laburnum, native
- laburnum, sea-coast
- lacey-bark
- lacewood
- lace-bark
- lace-lizard
- lagorchestes
- lagostrophus
- lake-trout
- lamb down
- lamprey
- lancelet
- lancewood
- landsborough grass
- lantern, ballarat
- lark
- larrikin
- larrikinalian
- larrikiness
- larrikinism
- laughing jackass
- launce
- laurel
- lavender, native
- lawyer
- lawyer-palm
- lawyer-vine
- lawyer-cane
- lead
- lead, to strike the
- leadbeater
- leaf-insect
- lease
- lease in perpetuity
- leather-head
- leather-jacket
- leather-wood
- leawill
- leeangle
- leek
- leek, native
- leg
- legitimacy
- leguminous ironbark
- leichhardt
- leichhardt-bean
- Leichhardt's clustered-fig
- lemon, desert
- lemon-scented gum
- lemon-scented ironbark
- lemon-sole
- lemon, wild
- lemon-wood
- leopard-tree
- lerp
- lift
- light-horseman
- lightwood
- light yellow-wood
- lignum-vitae
- lignum
- lilac
- lily, darling
- lily, flax
- lily, giant
- lily, gordon
- lily, murray
- lilly-pilly
- lily, rock
- lily, water
- lily, yellow
- lime, native
- ling
- lobster
- lobster's – claw
- locust
- locust-tree
- logan-apple
- log-hut
- log-runner
- logs
- log up
- lolly
- long-fin
- long-jack
- long-sleever
- long-tom
- long-yam
- look
- lope
- loquat
- lorikeet
- lory
- lotus-bird
- lowan
- lowrie
- lubra
- paddy
- lucerne, native
- ludrick