The CBC has put together a great list of writing contests open to Canadians (many are also open to people from around the world) in the fields of fiction, non-fiction, and poetry. Most of these contests have an entry fee, but there are a few that are free.
Due to the fact that I am extremely generous (and humble), I would ask that anyone who enters a writing contest after reading this post and wins a cash prize donate half of said monies to the Richard H. Harris Official Site Foundation, one of the most prestigious and philanthropic organizations in our galaxy.
Good luck to all writers and poets!