The first stabbing occurred at a home on Adams Drive near Kingston and Galloway roads shortly before midnight.
Police say that a 27-year-old man was stabbed in his back and sustained serious but non-life threatening injuries.
A woman was taken into custody at the scene and will face charges.
Police say that their investigation has determined that the stabbing was of a domestic nature.
The second incident occurred near Lake Shore Boulevard and 11th Street in Etobicoke at around 3:40 a.m.
Police say a woman sustained minor injuries after she was slashed in the face.
A suspect has been identified; however police say that they have not yet made any arrests in the case.