Osamu Mukai (向井 理, Mukai Osamu, born February 7, 1982) is a Japanese actor. He was born in Kanagawa Prefecture, Japan. He graduated from Meiji University.^[2][3]

He was born in Isogo-ku, Yokohama, Kanagawa prefecture and went to Hama Junior high school (浜中学校) and Hitorizawa High school, where it became the location for After the Rain.^[4] He graduated from Meiji University, and majored in genetic engineering.^[5] He received the "Best Poster Award" at the International Zoological Genetics Conference in 2004.^[6] While he was attending university, he worked as a bartender. He became a full-time employee there after graduation, and he became a manager later.^[7] While working as a bartender, he got into the magazine Tokyo Graffiti.^[6] A reader later recruited him to be an actor. Now, he works for Hori agency, as an actor.