Mutual Street Arena, initially called Arena Gardens or just the Arena, was a hockey arena in Toronto, Ontario. It was constructed for a reported cost of $500,000 and opened in 1912. At the time, it was billed as the largest indoor arena in Canada and held about 7,500 for hockey. The rink was owned by the Toronto Arena Company, organized September 19, 1911 with Sir Henry Pellatt as president, Lol Solman as managing director, and directors Aemilius Jarvis, Joseph Kilgour, T.W. Horn, R.A. Smith, and Col. Carlson. There were two other directors from Montreal. It was built on the site of the Mutual Street Rink, used primarily for curling and skating between Dundas Street and Shuter Street.