The first incident happened at around 1 a.m. at McCowan Road near Danforth Road and Eglinton Avenue. A man suffered non-life threatening injuries.
A suspect, a man known to the victim, was arrested and charged.
In an unrelated event police received the call at around 1:30 a.m. and responded to a scene at Lake Shore Boulevard East near Cherry Street.
Two groups came off the boat cruise and got into an argument which resulted in the stabbing of a 21-year-old man who suffered non-life threatening injuries.
Police said the victim was being "uncooperative" and that no arrests have been made.