For many years, the Old Trafford side dominated the Premier League and became heavyweights of European football under their incredibly successful manager Sir Alex Ferguson.
And, after a period of transition, it seems as though Jose Mourinho could be building a new era of glory at the north-west club.
There have been so many fantastic Manchester United players over the past few decades, it"s incredibly difficult to pick out the most talented footballers in each position on the field.
But, over the past couple of weeks, a number of Manchester United greats have attempted to pick a team of players who they believe are the greatest to grace the Theatre of Dreams using the United By You tool.
And thousands of supporters have also used the tool to pick their best ever side.
Paul Scholes, who was selected 12,663 times, is the player that was selected in more of the fans" teams than any other.
But what does the overall supporter XI look like?
Click through the gallery above to see Manchester United"s best ever XI - as voted for by the fans.
