Richard Leo Carroll was a Canadian ice hockey coach. He led the Toronto team in the National Hockey League to the Stanley Cup championship in 1918 and the Toronto Canoe Club junior hockey team to the Memorial Cup win in 1920.

The Toronto Arenas or Torontos were a professional men's ice hockey team that played in the first two seasons of the National Hockey League (NHL). It was operated by the owner of the Arena Gardens, the Toronto Arena Company. As the ownership of the National Hockey Association (NHA) Toronto Blueshirts franchise was in dispute, the new NHL league was started, and a temporary Toronto franchise was operated. The NHL itself was intended to only be a one-year entity until the NHA could be reactivated, although it never was.