Premier Dalton McGuinty and Ontario Provincial Police Commissioner Julian Fantino will make the announcement Friday at 10 a.m. EDT.
Sources say 53 of the new officers will go into the provincial police effort to target illegal guns.
In addition, the Ministry of the Attorney General will hire six new prosecutors to better track, investigate and stem the flow of handguns.
The money will begin to flow as soon as provincial police can hire and train the new officers.
Calls for tougher measures to fight gun violence were renewed after four people were shot and killed in Toronto last weekend. The victims included 11-year-old Ephraim Brown, who was attending a birthday party when he was shot in a shootout between two rival gangs.