Hello!
Alo!
Anyong haseyo!
Apa Kabar!
Ave!
Bon jour!
Ciao!
Hajur!
Hallo!
Hej!
Hei!
Hola!
Kaise ho!
Kem Chho, Kem Che!
Ki Khobor!
Marhaba!
Moin Moin!
Moni!
Namaskaram!
Namskar!
Konnichiwa!
Manh gioi!
Marhabai!
Ni hao!
Shalom!
Sallam!
Sat-Sri-Akal!
Strasvedte!
Yah-shimu-siz!
Zhao Shen!
For a longer listing of "hellos" to the world, go see
http://www.ipl.org/youth/hello/