"Sto lat!" ( which literally means " a hundred years") In Poland when singing birthday song, we sing : "Sto lat, sto lat niech żyje, żyje nam". We basically wish a 'birthday person' a hundred year long life. All the best In Chinese, which I am currently learning, they say 生日快乐 sheng1ri4kuai4le4 生being born 日day/sun 生日day of birth 快乐happiness So in Chinese, they wish "Happy birthday" as well as in English. All the best xx

in arabic is : عيد ميلاد سعيد

In the Persian language, we say "TAVALODET MOBARAK"

Hungarian: Boldog születésnapot! (informal: Boldog szülinapot!)