The International Federation of Football History and Statistics has drawn up the Team of the Decade rankings with Barcelona first, Juventus sixth and Napoli in 12th place.
Covering the 2011-20 period, the IFFHS calculated that Barca are the best-performing club side in the world with 2,877 points, having also been named Team of the Decade for 2001-10, as well as Team of the Year in 2011, 2012 and 2015.
Real Madrid came in second, then Bayern Munich, Paris Saint-Germain and Atletico Madrid.
Juventus are the highest-ranking Italian side in sixth, ahead of Chelsea, Manchester City, Manchester United and Arsenal.
Napoli come next in 12th, but there isn’t another Serie A representative until Lazio in 30th spot.
Inter come in 32nd, behind Olympiacos, with Milan back at 37th and Roma 38th.