The 2012 World Junior A Challenge was an international Junior "A" ice hockey tournament organized by Hockey Canada.

It was hosted in Yarmouth, Nova Scotia, from November 5–12, 2012, at the Mariners Centre.

The event also included the 8th annual Canadian Junior Hockey League Prospects Game Challenge, marking the second time the two events have been paired together.

Switzerland is back after a hiatus, replacing Sweden.

Players: Staff: For the second consecutive year, the Canadian Junior Hockey League Prospects Game was a part of the WJAC festivities.