His elder brothers Randhir Kapoor and the late Rishi Kapoor were also Bollywood actors, Shammi Kapoor and Shashi Kapoor were his uncles, Prithviraj Kapoor was his paternal grandfather, Raj Kapoor was his father and Trilok Kapoor was his paternal greatuncle
राज कपूर यांचे वडील पृथ्वीराज कपूर आणि भाऊ शम्मी कपूर व शशी कपूर हेही चित्रपट अभिनेते होते.