List of legendary creatures (L)
- La-bar-tu – Disease demon
- Labbu – Sea snake
- Lady midday – Sunstroke spirit
- Ladon – Dragon guarding the golden apples of the Hesperides
- Laelaps – Enchanted dog that always caught his prey
- Laestrygonians – Anthropophagic giants
- Lakanica – Field spirit
- Lake monster – Gigantic animals reported to inhabit various lakes around the world
- Lakhey – Demon with fangs
- La Llorona – Death spirit associated with drowning
- Lamassu – Protective spirit with the form of a winged bull or human-headed lion
- Lambton Worm – Giant worm
- Lamia – Child-devouring monster with the upper body of a woman and the tail of a snake
- Lamiak – Water spirit with duck-like feet
- La Mojana – Shapeshifting, female water spirit
- Lampades – Underworld nymph
- Landvættir – Nature spirits
- Langmeidong – Half-human, half-hornbill creature
- Lares – House spirit
- La Sayona – Female ghost that punishes unfaithful husbands
- La Tunda – Nature spirit that seduces and kills men
- Lava bear – Miniature bear thought to inhabit the lava beds of south-central Oregon
- Laukų dvasios – Field spirit
- Lauma – Sky spirit
- Lavellan – Gigantic water rat
- Leanan sidhe – Vampiric fairy lover
- Leimoniads – Meadow nymph
- Leokampoi – Fish-tailed lion
- Leontophone – Tiny animal poisonous to lions
- Leprechaun – Cobbler spirit
- Leszi – Tree spirit
- Leuce – White poplar tree nymph
- Leucrota – Crocotta-lion hybrid
- Leviathan – Sea monster seen in Job 41
- Leyak – Anthropophagous flying head with entrails
- Libyan Aegipanes – Human-horse hybrid
- Libyan Satyr – Human-goat hybrid
- Lidérc – Magical chicken that transforms into a humanoid
- Lietuvēns - Soul of a murdered person
- Lightning Bird – Magical bird found at sites of lightning strikes
- Likho – One-eyed hag or goblin
- Lilin – Night-demoness
- Lilitu – Winged demon
- Limnades – Lake nymph
- Lindworm – Dragon
- Ljósálfar – Light elves
- Ljubi – Demoness
- Llamhigyn Y Dwr – Frog-bat-lizard hybrid
- Loch Ness Monster – Serpentine sea monster
- Loki – Trickster figure
- Lo-lol – Hideous monster
- Lóng – Chinese dragon
- Long Ma – Dragon-horse hybrid
- Loogaroo – Shapeshifting female vampire
- Lou Carcolh – Snake-mollusk hybrid
- Loup-garou – Werewolf
- Loveland frog – Humanoid frog cryptid
- Lubber fiend – House spirit
- Luduan – Truth-detecting animal
- Lugat – Vampire
- Lui-kong-tsiau – Thunderbird
- Luison – Werewolf, or cadaver-eating dog
- Lusca – Sea monster
- Lutin – Amusing goblin
- Lyngbakr - Whale-like sea monster
- Lynx – Feline guide spirit