It's Such a Beautiful Day
- taona: 2012
- Firenena: United States of America
- Genre: Animation, Comedy
- Studio: Bitter Films
- Keyword: nightmare, immortality, narration, dark comedy, surrealism, hospital, illness, mental illness, adult animation, death of parent, divorced parents, stick figures, philosophical, existential horror, brooding, existential crisis
- tale: Don Hertzfeldt
- Cast: Don Hertzfeldt, Sara Cushman