Most of the actors who belonged to Islam or Christianity changed their names to work in films.
Dilip Kumar was Yusuf Khan
Madhubala was Mumtaz Jehan Begum Dehlavi
Meena Kumari was Mahjabeen Bano
Suraiya was Suraiya Jamal Sheikh
Mandakini is Yasmin Joseph
Jagdeep was Sayeed Ishtiaq Ahmed Jaffrey
Vijay is Chandrasekaran Joseph Vijay
Nayantara is Diana Mariam Kurian
Tabu is Tabassum Fatima Naaz
Ajit (old character actor) was Hamid Ali
Jayant was Zakaria Khan
Arjun (of Mahabharata) is Feroz Khan
Khushboo Sundar is Nakhat Khan