Water spirit

African

• Mami Wata is a transcultural pantheon of water spirits and deities of the African diaspora. For the many names associated with Mami Wata spirits and goddess, see Names of Mami Wata.
• Owu Mmiri of some riverine people of Nigeria are often described as mermaid-like spirit of water.
• A jengu is a water spirit in the traditional beliefs of the Sawa ethnic groups of Cameroon, particularly the Duala, Bakweri, and related Sawa peoples. Among the Bakweri, the name is liengu.

  Celtic

• An Each uisge is a particularly dangerous "water horse" supposed to be found in Scotland; its Irish counterpart is the Aughisky.
• The Gwragedd Annwn are female Welsh lake fairies of great beauty.
• A Kelpie is a less dangerous sort of water horse. There are many similar creatures by other names in the mythology including:
• * the tangie
• * the nuggle also known as the shoopiltee or njogel
• * the cabbyl-ushtey
• * the Ceffyl Dŵr
• * the capall uisge or the glashtin
• Morgens, Morgans or Mari-Morgans are Welsh and Breton water spirits that drown men.
• Selkie

  Germanic

• The Neck or the Nix/Nixe/Nyx are shapeshifting water spirits who usually appear in human form.
• The Undine or Ondine is a female water elemental.
• Jenny Greenteeth in the folklore of Lancashire
• Peg Powler said to inhabit the River Tees in Yorkshire
• The grindylow in the folklore of both Lancashire and Yorkshire.

  Ancient Greek

• Naiads were nymphs who presided over fountains, wells, springs, streams, and brooks
• * Crinaeae were a type of nymph associated with fountains
• * Limnades or Leimenides were a type of naiad living in freshwater lakes.
• * Pegaeae were a type of naiad that lived in springs.
• Nereids were sea nymphs.
• Sirens were bird-headed women living in the sea near a rocky island coastline.

  Japanese

• Kappa, alternately called Kawatarō or Kawako, are a type of water sprite.
• A Hyōsube''' is a hair-covered version of a Kappa.

  Mesoamerican

• Ahuizotl; a dog-like aquatic creature that drowned the unwary.

  Oceanic

• Adaro were malevolent merman-like sea spirits found in the mythology of the Solomon Islands.

  Roman

• Camenae were goddesses of springs, wells and fountains, or water nymphs of Venus.

  Slavic

• A Vodyanoy is a male water spirit akin to the Germanic Neck.
• A Rusalka was a female ghost, water nymph, succubus or mermaid-like demon that dwelled in a waterway.
• А Berehynia in ancient Ukrainian folklore is a goddess spirit that guarded the edges of waterways, while today it is used as a symbol for Ukrainian nationalism.
• For potoplenyk, vila/wila/wili/veela, and vodianyk, see also Slavic fairies.

  Thai

• Phi Phraya, a female ghost living in the water.
• Phi Thale, a spirit of the sea. It manifests itself in different ways, one of them being St. Elmo's fire, among other uncanny phenomenons experienced by sailors and fishermen while on boats.