The Mimico Monarchs were a Junior ice hockey team based in the Mimico neighbourhood of Toronto, Ontario, Canada.

For some time, the team was known as the Richmond Hill Riot and played in Richmond Hill, Ontario.

The Monarchs were a part of the Central Junior B Hockey League.

In 1989, they jumped to the Metro Junior "B" league and stayed with the league until one season after it became the Metro Junior A Hockey League.

This Ontario ice hockey team-related article is a stub.