Kathleen Wynne has issued a statement saying she will not tolerate what she calls the "hateful politics of division in Ontario."
Media reports say the flyers show a black and white picture of a group of Caucasians above separate photograph of a group of Sikhs with captions that read "from this...to this..."
Underneath the two pictures is a caption "Is This What You Want?"
Media reports quote some local residents as saying they're quite upset by the flyer _ one person described it as racist and offensive.
Wynne's statement says Ontario is a beacon of inclusiveness but that can't be taken for granted.
"Every time people try to pull us apart, we're going to fight back and that brings us all closer together," said the statement issued Saturday.
The flyer lists a website of a group called Immigration Watch Canada.
The group did not immediately respond to an email asking whether it is responsible for the flyer.
The Toronto Star reported Thursday that the group confirmed its members in Brampton distributed the flyers in the past week.