Raj Khosla had a son out of wedlock. That child is director Milind Luthria. Raj Khosla was already married with children.Milind's mother is the cousin of Mahesh Bhatt. Milind Luthria's mother later married Arjun Luthria. Arjun Luthria adopted Milind and gave him his name (Milind Arjun Luthria). Arjun Luthria was the brother of actor Sudhir.
Daughters named Uma Khosla Kapoor, Sunita Khosla Bhalla, Anita Khosla Puri, Reena Khosla Kataria, Sonia Khosla Vinaik.
Brother of producer, director Bholu Khosla.
Daughters Anita Khosla, Reena Khosla and cousins acted in the film Do Premee.