Kangla Sha
Karkadann
Karnabo
Kayeri
Kee-wakw
Keelut
Kekkai
Keythong
Khalkotauroi
Kholomodumo
Knucker
Kokakuchō
Konaki-jiji
Kongamato
Konyok-Gorbunok
Kraken
Kudan
Kui
Kukwes
Kulshedra
Kurangaituku
Kuyutha
Kye-ryong
Labbu
Ladon
Laelaps
Laestrygonians
Lagarfljot Worm
Lambton Worm
Lamia
Lamya (Sura Lamya)
Lavellan
Leocampus
Leon
Leontophone
Leucrota
Leviathan
Lindworm
Lizard Man of Scape Ore Swamp
Llamhigyn Y Dwr
Loch Ness Monster
Lóng
Longma
Lotan
Lou Carcolh
Loveland Frogman
Lusca
Lyngbakr
Machlyes
Macrocephali
Maero
Maha-pudma
Majitu
Makara
Mandi
Manticore
Manutara
Mapinguari
Marabbecca
Mares of Diomedes