The quartet of sides have been pencilled in to visit the Millennium Stadium next November - subject to IRB approval - and will hand Warren Gatland a chance to assess his side against the best ahead of the 2015 World Cup.
Wales lost to South Africa and Australia during the most recent autumn series this season, extending their poor record against the trio of southern hemisphere giants to just one win from 23 games.
WRU chief executive Roger Lewis believes that it is crucial for the progression of the national side that they continue to line up against the best sides in world rugby.
Lewis said: "We have consistently said, if you want to be the best, you have to play the best and the 2014 autumn schedule reconfirms that commitment.
"We have just witnessed another exhilarating, tough autumn series and next year will be ideal preparation for the squad ahead of the 2015 Rugby World Cup.
"We will only have 12 matches in total in the run-up to our opening game at the tournament, so we must secure every opportunity to test ourselves at the highest level."