Jackie Shroff - His real name is 'Jaikishen Kakubhai Shroff'. His screen name, "Jackie" was given by director Subhash Ghai, when he launched him in the film, 'Hero'.
Amitabh Bachchan - Initially he was named 'Inquilab', later he was named as Amitabh. While his father adopted his pen-name 'Bachchan', as he was against the cast system during the struggle of Indian independence.
Shashi Kapoor - His real name was 'Balbir Raj Prithviraj Kapoor'. He started acting under the name of Shashiraj. Later he changed his name to Shashi Kapoor.