Portal:Animation/Anniversaries/August/August 21
- Films released
- 1943 – Scrap Happy Daffy (United States)
- 1948 – Hot Cross Bunny (United States)
- 1953 – Fireman's Brawl (United States)
- 1965 – Run, Run, Sweet Road Runner (United States)
- 1982 – Flash Gordon: The Greatest Adventure of All (United States)
- Births
- 1961 – Stephen Hillenburg, American animator, producer, screenwriter, and voice actor (pictured) (d. 2018)
- 1970 – Cathy Weseluck, Canadian voice actress