'Singh's wife passed away this morning. She had cancer and fought it for nine years,' a statement issued on behalf of her son Vindu Dara Singh.
Surjit was Singh's second wife. The last rites will be performed at 6 pm this evening at the Juhu crematorium in suburban Mumbai.
The 83-year-old wrestler-actor had passed away in 2012 following a cardiac arrest.
PIX: Stars, fans say goodbye to Dara Singh
Dara Singh: The Man You Never Knew
Dara Singh: The First Superhero Of Bollywood
Mumtaz: I owe my film career to Dara Singh
Dara Singh: A Life In Pictures