Juanito "Jun" Aristorenas was a Filipino actor, director, dancer, producer and writer. Aristorenas was known for his western roles, and has topbilled cowboy’ movies such as Sagupaan ng mga Patapon, Dugong Tigre, Apat na Bagwis.
As an actor, Aristorenas has performed in movies such as Danilo Ronquillo: Cavite Boy, released in 1965, in which he portrayed Danilo Ronquillo, Rico Solitaryo, and Bale-bale Kung Lumaban. As a movie director, he has worked on movies such as Matalino man ang matsing na-iisahan din!, released in 2000, Cara y Cruz: Walang Sinasanto!, and Marami Ka Pang Kakaining Bigas.
Aristorenas has also written the story of "Matalino man ang matsing na-iisahan din!", released in 2000.