Ponyo (崖の上のポニョ, Gake no Ue no Ponyo^?, literally "Ponyo on the Cliff"), initially titled in English as Ponyo on the Cliff by the Sea, is a 2008 Japanese animated fantasy film written and directed by Hayao Miyazaki of Studio Ghibli. It is Miyazaki's eighth film for Ghibli, and his tenth overall. The plot centers on a goldfish named Ponyo who befriends a five-year-old human boy, Sōsuke, and wants to become a human girl.

The film has won several awards, including the Japan Academy Prize for Animation of the Year. It was released in Japan on July 19, 2008, August 14, 2009 in the US and Canada and February 12, 2010 in the UK. The film reached #9 in the US box office charts for its opening weekend.

Brunhilde is a fish-girl who lives in an aquarium with her father Fujimoto, a wizard, in his underwater castle with numerous smaller sisters. One day, when her father takes her and her siblings on an outing in his four-flippered submarine, Brunhilde is driven by a desire to see even more of the world and floats away on the back of a jellyfish. She ends up stranded on the shore of a small fishing town and is rescued by a boy named Sōsuke, who cuts his finger in the process. She licks his wound when he picks her up, and the wound heals almost instantly. After taking a great liking to her, Sōsuke names her Ponyo and promises to protect her forever. Meanwhile, Fujimoto is looking for his daughter. Upset that she ran away, he believes the humans have now kidnapped her, and he calls his wave spirits to return Ponyo to him. After the wave spirits take Ponyo away, Sōsuke is heartbroken and goes home with his mother, Lisa, who tries to cheer him up, to no avail.