João has 5 characters
JOãO in capital letters

Γιώργος has 14 characters
Γιώργος in capital letters

Anton has 5 characters
ANTON in capital letters

Tomáš has 7 characters
TOMáš in capital letters

Kamilė has 7 characters
KAMILė in capital letters

Frančiška has 11 characters
FRANčIšKA in capital letters

愛子 has 6 characters
愛子 in capital letters

杰西卡 has 9 characters
杰西卡 in capital letters

Source - http://www.larryullman.com