Frank Sr passed away in Wellington, Florida earlier this week after a battle with prostate cancer, according to the Palm Beach Post.
The Italian-born Stallone family patriarch, who made his living by opening several hair salons, married former Celebrity Big Brother star Jackie in 1945.
Jackie and Frank Sr became parents to Sylvester and 'Far From Over' singer Frank Jr. Their troubled marriage lasted 12 years.
Frank Sr released his first novel Stewart Lane, the tale of a couple who attempt to renovate a dilapidated country house, at the age of 90 in 2010.
The Stallone family have yet to comment on Frank's passing.
Frank is survived by his five children and wife Kathleen.
Sylvester has lent his voice to the comedy Zookeeper, which is now playing in US cinemas and opens in the UK on July 29.
