Listed here are Hawaiian plant common names that begin with the letter L.
- Lady of the Night
- Lantana
- Large-flowered Pink Sorrel
- Large-flowered Thunbergia
- Lasiandra
- Laua'e
- Lead Tree
- Leadtree, White
- Leadwort, Cape
- Leucaena
- Li'ipoe
- Life Plant
- Light Galangal
- Lilac Oxalis
- Lilac Tasselflower
- Liliko'i
- Lilikoi
- Lily, Crane
- Lily, Pink Porcelain
- Little Bell
- Littlebell
- Lobster Claw, Expanded
- Lobster Claw, Golden
- Lobster Claw, Hanging
- Lobster-claw
- Lobsterclaw, Expanded
- Luckynut