Sachin Tendulkar from india played most matches in world cup
sachin Tendulkar has played most number of matches in ODI cricket
Ricky Ponting has played most matches in world cup.He has played 46 matches.
Brazil have played the most matches.
steve waugh has played most matches in world as captain
if you mean football then beckenbaur
Headingley, Leeds(England) is the ground to host the most no of matches in cricket world cup .and the total number of matches held is 12
Sachin Tendulkar has played most icc world cup matches.He has played six ICC World Cups.