Which player has scored the greatest number of own goals in the top five European Leagues (as measured by UEFA coefficient: La Liga, Serie A, Premier League, Bundesliga, Ligue 1)?
For the Premier League it is Richard Dunne Source
For the Bundesliga there are two players who are tied: Manfred Kaltz & Nikolce Noveski Source from the Bundesliga Website
For La Liga the top own goal scorer is Fernando Caceres La Liga Source
In Serie A there are two players who are tied with 8 own goals: Riccardo Ferrari and Franco Baresi Source for Serie A
In Ligue 1 there are a couple of players who are tied for being #1 in own goals. Here are some: Aly Cissokho, Anthony Weber, Damien Da Silva all with 4 own goals. Source for Ligue 1
If you are looking who the Top Own goal scorer is between these 5 leagues, it would be Richard Dunne with 10 own goals.