Here's a look at the celebs and their real names.
We know her as Sunny Leone, but did you know that she uses her birth name - Karenjit Kaur Vohra - on her passport?
Preity Zinta uses her given name very rarely and you know what it is? She is called- Preetam Zinta Singh.
Katrina Kaif was Kate Turquotte before her Bollywood debut.
Sridevi is Shree Amma Yanger.
Mallika Sherawat is Reema Lamba.
Madhubala was Mumtaz Jehan Begum Dehlavi.
Salman Khan is Abdul Rashid Salim Salman Khan.
Rajnikant was Sivaji Rao Gaekwad before he started his film career.
Mahima Chaudhry is Ritu Chaudhry
Kamal Haasan's real name is Parthasarathy.
John Abraham is Farhan Abraham
Shammi Kapoor is Shamsher Raj Kapoor.
Raj Kapoor is Ranbir Raj Kapoor.
Akshay Kumar is Rajiv Hari Om Bhatia.
Dilip Kumar is Yusuf Khan.
Govinda is Govind Arun Ahuja
Bobby Deol is Vijay Singh Deol.
Ajay Devgn who has now dropped the extra a in Devgn was initially Vishal Devgan.
Rekha is Bhanurekha Ganesan.
Jeetendra is Ravi Kapoor
Johnny Lever is John Prakasa Rao Janumala
Amitabh Bachchan's father had named him Inquilaab inspired by the slogan during the Independence struggle, but later her renamed him Amitabh, which means a light that would never go off.