There were many.
- DILIP KUMAR( MUHAMMAD YUSUF KHAN)
He was requested by DEVIKA RANI to change his name.
2.MADHUBALA (MUMTAZ JEHAN DEHLAVI)
3. MEENA KUMARI(MAHJABEEN BANO)
She was rechristened as Meena Kumari by director Vijay Bhatt.
4. JOHNNY WALKER (BADRUDDIN JAMALUDDIN KAZI)
He was rechristened to johnny walker after a famous scotch whiskey brand Johnnie walker by director Guru Dutt.
some more names people like sanjay and ajit too changed their names.
Present day non hindu actor with hindu name:
- ARJUN (FEROZ KHAN)
He played the famous character Arjun in B.R. CHOPRA'S Mahabharat. After this serial he legally changed his name to Arjun.