Emergency officials were called to Dundas Street and Jarvis Street at around 3 am this morning.
The victim suffered serious injuries to his hand after an altercation.
Paramedics say the victim is in stable condition.
There is no word on suspects at this time.
Police are encouraging anyone with information to contact Crimestoppers.
Stabbing Dundas St E near Jarvis St, report of one person possibly stabbed. Unknown injuries, unknown suspect(s). We are OTW ^ma
— Toronto Police OPS (@TPSOperations) October 15, 2016