Cai Shangjun (Chinese: 蔡尚君; pinyin: Cài Shàngjūn) is a Chinese film director and screenwriter. Cai graduated from the Central Academy of Drama in 1992. Since then, his major work has been that of a professional screenwriter. Cai was part of the team, along with Zhang Yang, Diao Yi'nan, and Liu Fendou, that co-wrote the screenplays for two of Zhang's films: Spicy Love Soup (1997) and Shower (1999). Cai also cowrote a script for Zhang's Sunflower (2005). In 2007, Cai directed his first film, The Red Awn, which won the FIPRESCI Prize at the 2007 Pusan International Film Festival.