Rosa Kato (加藤 ローサ, Katō Rōsa, born 22 June 1985) is a Japanese actress and commercial model.
Kato's mother was Japanese and her father was Italian they met at an Italian restaurant her father worked at in Yokohama. When Rosa was five years old, the family moved to Naples, Italy. At that time she was able to speak and understand Italian, but has since forgotten almost every word. Hence, Kato was a regular guest student on Italian Conversation NHK TV program. She was named Rosa after her paternal grandmother.