K. K. Mahajan was an Indian cinematographer who was known for his work in Parallel Cinema. In a career that spanned over four decades, he won four National Film Awards. He was best known for his work with filmmakers such as Kumar Shahani, Mani Kaul, Basu Chatterjee and Mrinal Sen. Starting his career in the late 1960s, Mahajan worked simultaneously in parallel and mainstream films for the next four decades. In all he shot 84 feature films, around 100 commercials and over 20 documentaries and several television serials.