Neptune's Daughter is a 1914 American silent fantasy film featuring the first collaboration between actress Annette Kellerman and director Herbert Brenon.

[1] It was based on Kellerman's idea of "a water fantasy movie with beautiful mermaids in King Neptune's garden together with a good love story."

[4] George Blaisdell, writing for The Moving Picture World after seeing a pre-release screening, gave the film a positive review, noting that "There is a wealth of incident in 'Neptune's Daughter.'

The transition of Annette from the dominions of Father Neptune to the world of mortals and vice versa is so skillfully treated that it seems the perfectly natural course of events".

[4] The film received renewed interest after 1916 when the popular A Daughter of the Gods was released, which also starred Kellerman and included a brief nudity scene.