Sporting iD, a company analysing sports data, revealed in their latest research that Rooney edged out the likes of Fernando Torres and Steven Gerrard who have also been extremely popular over the past year.
Outside the Premier League, Cristiano Ronaldo is the most popular and he ranks in fourth place. The Portuguese star joined Real Madrid in a world record transfer and has gone on to star for the Madrid club, notching 43 goals so far in the current campaign. He has broken the single season scoring record twice and is on track to help his team achieve their first La Liga title in four seasons.
Chelsea's Frank Lampard is in fifth place and ahead of several other players on the list which compiles T-shirt sales over the 20 seasons of the Premier League.
Sporting iD global sales and marketing director Rob Thayne commented on Rooney's performance: "He (Rooney) truly went into a league of his own in 2007 when Ruud van Nistelrooy vacated the Manchester United number 10.
"That's the shirt of one of Wayne's heroes, Denis Law, and of course 10 is the fabled number of Pele and Maradona. Add to that Rooney's incredible performances and popularity then, it's no surprise that there's such global demand by fans for his name."
Rooney was unable to help his side beat local rivals Manchester City on Monday, however, allowing them to take the lead in the title race. With two games remaining, it is likely that United could miss out on winning their 20th league title.