One of the most popular mermaid movies of all time. An idealistic, lonely man falls in love with a beautiful, mysterious blonde, but something's fishy about her....
Beautifully filmed movie about a dangerous mermaid being transported by Edwardian carnival workers.
The Mermaids of Tiburon
Lovely movie, only recently available, about a diver who comes upon a mermaid grotto.
Pirates of the Caribbean: On Stranger Tides
The fourth Pirates movie features a mermaid.
British 1948 classic about a mermaid who visits land.
Mad About Men
Sequel to Miranda.
Mr. Peabody and the Mermaid
1948 comedy about a man whose midlife crisis involves a flirtation with a mermaid.
The Little Mermaid
Disney's retelling of Andersen's classic tale.
A woman who plays a mermaid in a carnival believes that she actually is one.
Beach Blanket Bingo
A real mermaid appears in this Frankie & Annette beach comedy.
A classics professor falls in love with a mermaid.
Lighthearted teen comedy about a mermaid who visits the world above.
This movie doesn't have any actual mermaids, but is worth watching anyway. Four women pose as the sirens of myth for a bohemian painter as a young wife has a sensual awakening.
The Secret of Roan Inish
Another almost-mermaid movie. Ireland, selkies, and a little-girl heroine remniscent of Alice in Wonderland.
I haven't seen this one; it appears to be an independent film.