Wikimedia Commons has media related to Screenwriters from Canada.

Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.

Classification: People: By occupation: Film people / Writers: Screenwriters: By nationality: Canadian
Also: Canada: People: By occupation: Film people / Writers: Screenwriters