Tony Conte, who appeared in the crime drama "Omerta" in the 1990s, has been found guilty of conspiracy and possession of cocaine with intent to traffic.
The actor was arrested by undercover police agents during a drug sting at a Montreal hotel in October 2008.
Police said Conte was involved in a deal for 30 kilograms of cocaine for $500,000, with an option for 70 more kilograms if the initial deal went well.
Conte insisted he was only at the hotel to make inquiries for a friend about the health of a Mexican man.
Sentencing arguments are set for Feb. 2.
The Crown argued Conte was a major player in the deal.
They say he wanted to buy cocaine, using Mexican drug dealers as intermediaries, from the undercover officers.