The Great Adventure of Horus, Prince of the Sun is a 1968 Japanese anime fantasy adventure film. It is the directorial feature film debut of Isao Takahata and was also worked on by Hayao Miyazaki. Horus marked the beginning of their partnership that would last for the next 50 years across numerous animation studios.

Isao Takahata was a Japanese director, screenwriter and producer. A co-founder of Studio Ghibli, he earned international critical acclaim for his work as a director of Japanese animated feature films. Born in Ujiyamada, Mie Prefecture, Takahata joined Toei Animation after graduating from the University of Tokyo in 1959. He worked as an assistant director, holding various positions over the years and collaborating with colleague Hayao Miyazaki, eventually directing his own film, The Great Adventure of Horus, Prince of the Sun (1968). He continued his partnership with Miyazaki, and under Nippon Animation directed the television series Heidi, Girl of the Alps (1974), 3000 Leagues in Search of Mother (1976), and Anne of Green Gables (1979). Takahata, Miyazaki and others formed Studio Ghibli in 1985, where he would direct Grave of the Fireflies (1988), Only Yesterday (1991), Pom Poko (1994), and My Neighbors the Yamadas (1999). His last film as director was The Tale of the Princess Kaguya (2013), which was nominated for an Academy Award in the category of Best Animated Feature Film at the 87th Academy Awards.