Jun Sasaki (佐々木 潤, Sasaki Jun, born July 7, 1966) is a Japanese singer-songwriter and record producer. He is best known for his work as a record producer for acts including Misia, Chara, and Yuki Koyanagi. Sasaki also works as a photographer under the alias of Yajimax. In 2005, Sasaki married musician and actress Kaori Hifumi.