Barcelona and Manchester United boasted the highest total attendance in Europe last season, while the number of fans attending matches went up across the continent.
According to UEFA's Club Licensing Benchmarking Report, Barca's cumulative attendance in 2015-16 was 1.5million, besting United's 1.43m.
Bundesliga giants Borussia Dortmund outstrip both in terms of average attendance, with 81,178 at their Signal Iduna Park home, although Germany's top flight being an 18 as opposed to a 20-team competition contributed to their overall attendance coming in third at 1.38m.
Dortmund's bitter domestic rivals Bayern Munich rounded out the top five with 75,000 fans on average and 1.275m visitors to the Allianz Arena overall.
Manchester City's redevelopment of their Etihad Stadium helped the Premier League side to record the biggest increase in average club attendance in Europe, with a rise to 54,041 from 45,365 in the 2014-15 campaign.
City's total attendance breached the one-million mark, leaving them eighth overall, one place above Newcastle United.
Newcastle's relegation from the Premier League last term is likely to further boost figures for the second-tier Championship, which was the fourth-best attended league in Europe behind the Premier League, Bundesliga and LaLiga, while sitting above Serie A.
The Bundesliga, Premier League and LaLiga are listed in the top 20 average attendances for all sporting events across the globe. The World Cup is football's highest entry in third, behind rugby union's 6 Nations and the NFL.
