Junior Intercollegiate Series

The Junior Intercollegiate Series (JIS) was a third tier scholastic competition operating in Ontario from 1905-06 to 1927-28. The top tier in the region was the Canadian Intercollegiate Athletic Union (CIAU Central), and the second tier was the Intermediate Intercollegiate Series. Both were founded in 1902.

Champions

• 1905-06: St. Andrews
• 1906-07: University of Toronto III
• 1907-08: Royal Military College II
• 1908-09: Kingston CI
• 1909-10: Kingston CI
• 1910-11: University of Toronto III
• 1911-12: University of Toronto III
• 1912-13: University of Toronto III
• 1913-14: Kingston CI
• 1914-15: Kingston CI
• 1919-20: University of Toronto III
• 1920-21: Queens III
• 1921-22: Queens III
• 1922-23: University of Toronto III
• 1923-24: Royal Military College II
• 1924-25: Royal Military College II
• 1925-26: Queens III
• 1926-27: Kingston CI
• 1927-28: Queens III