contrary to popular opinioncontrary to popular belief/opinion
something that you say before you make a statement that is the opposite of what most people believe.
Contrary to popular belief, bottled water is not always better than tap water.
contrary to popular opinion
Opposite to what is popularly or generally expected or believed. Usually used to introduce such a statement. Contrary to popular opinion, higher taxes end up benefiting people more than lower ones.
contrary to popular beˈlief/oˈpinion
although it is not what most people consider to be true: Contrary to popular belief, many cats dislike milk.