Toronto police reported responding to a shooting in the Victoria Park Avenue and Finch Avenue East area. The exact location was not immediately clear.
Paramedics say the victim is a 20-year-old male.
The victim is being transported to a local trauma centre, paramedics say.
Police said they did not immediately arrest a suspect. They are urging the public to use caution in the area.
Anyone with information is being asked to contact investigators at 416-808-4200.