Marcelo, Sergio Ramos, Raphael Varane and Pepe form Los Blancos' contingent, while the Bavarian quartet consists of David Alaba, Jerome Boateng, Dante and Philipp Lahm
Los Blancos quartet Marcelo, Sergio Ramos, Raphael Varane and Pepe are all nominated, as are Bayern Munich's treble-winners David Alaba, Jerome Boateng, Dante and Philipp Lahm.
Both Spanish champions Barcelona and Europa League winners Chelsea have three contenders each. The Blaugrana are represented by Jordi Alba, Dani Alves and Gerard Pique, while David Luiz, Ashley Cole and Branislav Ivanovic make up the Blues contingent.
Manchester City contribute two candidates in the form Argentine full-back Pablo Zabaleta and Belgium centre-back Vincent Kompany.
Elsewhere, Nemanja Vidic is Manchester United's sole representative, while Paris Saint-Germain's Brazilian defender Thiago Silva, Borussia Dortmund centre-back Mats Hummels and Everton left-back Leighton Baines also make the cut.
FIFPro World XI Shortlist of Defenders: David Alaba (Austria, Bayern Munich); Jordi Alba (Spain, Barcelona); Dani Alves (Brazil, Barcelona); Leighton Baines (England, Everton); Jerome Boateng (Germany, Bayern Munich); Ashley Cole (England, Chelsea); Dante (Brazil, Bayern); Mats Hummels (Germany, Borussia Dortmund); Branislav Ivanovic (Serbia, Chelsea); Philipp Lahm (Germany, Bayern); David Luiz (Brazil, Chelsea); Vincent Kompany (Belgium, Manchester City); Marcelo (Brazil, Real Madrid); Pepe (Portugal, Madrid); Gerard Pique (Spain, Barcelona); Sergio Ramos (Spain, Madrid); Thiago Silva (Brazil, Paris Saint-Germain); Raphael Varane (France, Madrid); Nemanja Vidic (Serbia, Manchester United); Pablo Zabaleta (Argentina, Man City)