A mermaid is a mythical creature with the upper body of a woman and the lower body of a fish.

Mermaid may also refer to:

• Mermaid Beach, Queensland, a suburb of the Gold Coast
• Mermaid Reach, a reach of the Brisbane River, Queensland
• Mermaid Reef, one of three reefs that make up Rowley Shoals, Western Australia
• Mermaid Waters, Queensland, a suburb of the Gold Coast
• Mermaids Cave, Blue Mountains, New South Wales, a site where an unknown creature was found

• Mermaid Quay, a shopping and leisure complex in Cardiff Bay, Wales
• The Mermaid (river), a watercourse in Norfolk, England

• The Mermaid, alternative title for "The Little Mermaid" (Den lille havfrue) by Hans Christian Andersen

• The Mermaid (1910 film), a 1910 film by the Thanhouser Company
• The Mermaid (1965 film), a 1965 Hong Kong film
• Mermaids (1990 film), 1990 film starring Cher, Bob Hoskins, Winona Ryder, and Christina Ricci
  • Mermaids (soundtrack)
• Mermaid (1996 film), originally Rusalka, a 1996 animated short film by Aleksandr Petrov
• Mermaid (2000 film), directed by Peter Masterson
• Mermaids (2003 film), starring Erika Heynatz
• Mermaid (2007 film) (Russian: Русалка, Rusalka), 2007 film directed by Anna Melikian
• Mermaids: The Body Found, a 2012 documentary-style television film
• The Mermaid (2016 film), a 2016 Chinese film

• The Mermaid (ballad), from the 18th century
• Die Seejungfrau or The Mermaid, by Alexander von Zemlinsky
• The Mermaid, a choral song by Ralph Vaughan Williams (1872–1958)

• "Mermaid" (Hitomi Shimatani song)
• "Mermaid" (Train song), from their 2012 album California 37
• "Mermaid", a song by Jay Chou from the 2014 album Aiyo, Not Bad
• "Kanshō/Mermaid", a 2003 song by Aya Ueto
• "The Mermaid" (Shel Silverstein song), by Shel Silverstein
• "The Mermaid", recorded by the American quintet Bounding Main and released on their 2005 album Maiden Voyage

• Mermaid (Lichtenstein), a 1979 Roy Lichtenstein outdoor sculpture in Miami Beach
• Mermaid (Carl-Nielsen), a 1921 bronze sculpture
• The Mermaids (Kramskoi), an 1871 oil painting

• Mermaid (Stafy), character from the Densetsu no Stafy video game
• Mermaid Series, editions of English Renaissance and Restoration dramatists (named after the Mermaid Tavern, above)
• The Idle Mermaid, a 2014 South Korean romantic comedy television series
• Cure Mermaid, a character in Go! Princess PreCure

• Mermaids Casino, Las Vegas, Nevada
• Mermaids (charity), a UK charity which supports transgender youth
• The Mermaid Inn (disambiguation)

• MERMAID, a marine scientific instrument platform, short for Mobile Earthquake Recorder for Marine Areas by Independent Divers

• Mermaid (dinghy), a sailing dinghy designed by Roger Hancock
• Mermaid, Kenichi Horie's first solo voyage sailboat
• CZAW Mermaid, an amphibious flying boat aircraft
• Dublin Bay Mermaid, a class of sailing dinghy originated by Dublin Bay Sailing Club, Ireland
• HMAS Mermaid (A 02), a 1989 Royal Australian Navy survey motor launch
• HMS Mermaid, various ships in the British Royal Navy
  • Mermaid-class destroyer, a class of two Royal Navy destroyers in the First World War
  • Mermaid-class frigate, a class of six sailing warships built in the eighteenth century.
• Seaview Mermaid, a class of racing keelboat based at the Sea View Yacht Club, Isle of Wight

• Mermaid (Ninurta), in Sumerian mythology, one of the Heroes slain by Ninurta
• Mermaid, a hybrid tea rose cultivar
• Fiji mermaid, a hoax presented by PT Barnum
• Mermaid Syndrome or Sirenomelia, a congenital deformity that gives an appearance of a mermaid
• Mermaiding, wearing a costume mermaid tail, often while swimming
• Mermaid is the ICAO radio callsign of Air Alsie, a small airline and charter company based in Sonderborg, Denmark
• Mermaid (software) is a JavaScript based diagramming and charting tool that renders Markdown-inspired text definitions to create and modify drawings dynamically

• Merman
• The Little Mermaid (disambiguation)