Raj Singh Chaudhary is an Indian actor, screenwriter and model best known for his role in the 2009 Hindi-language film, Gulaal. He has appeared in various other films such as Kuch Naa Kaho and Black Friday and as a lead in Antardwand (2010). Chaudhary is sometimes credited as Raja Choudhary or Raja Chaudhary.
Chaudhary was born in Darjeeling, India. After pursuing a career in modeling and earning his degree in software engineering from BMS College of Engineering, he opened his own company in Bangalore. When Chaudhary was defrauded by his business partners he took an opportunity to move to Mumbai in order pursue a new career in acting. Chaudhary was inspired to write his own script after seeing the film Satya with its script written by Anurag Kashyap. Drawing on experiences from his college days, he worked on his script which focused on the practice of ragging, the physical and mental abuse of students in educational institutions. After the film in which he was supposed to appear fell through, Chaudhary took his script to director Anurag Kashyap who became his mentor. Kashyap wrote a new screenplay based on Chaudhary's original script for what would eventually become the film