Originally Posted by
alanR
As for attaining more than 2 nationalities - it's quite simple especially when the US allows citizenship by virtue of birth - so a couple with different nationalities who give birth in the US would automatically give their child 3 citizenships. Then you have parents who themselves have multiple citizenships and it becomes easy to have 5 or more separate citizenships
Yes - I know a Greek/Spanish couple and a British/Finnish couple, both of which had a child in the US. These two children are both automatically triple-nationals at birth. I imagine this is far from rare.