China.... after that India comes on second position.

China.... but India overcome it very soon if they don't control over population growth.

China

I have to say that is China as well. Lol.

its because its one of the largest country

Chaina

oh, China is official be generally accepted have the highest population. but for the family planning, the China population reduce rapidly, this result may change in future.

Ya its china .But after china its India having highest population and increasing very rapidly and will be the highest population having country soon...