Answer
The answer is six. Canadian actress and comedian Catherine O'Hara has won a record-breaking six consecutive Canadian Screen Awards for Best Actress in a Leading Role in a Comedy Series for her portrayal of Moira Rose in the CBC sitcom "Schitt's Creek." She achieved this remarkable feat between the years of 2015 and 2020, showcasing her exceptional comedic talent and solidifying her status as a beloved icon of Canadian entertainment.