The surname An is a Chinese surname (Chinese: 安; pinyin: Ān) which literally means "peace" or "tranquility". It also serves as an abbreviation of Anxi (安息), meaning "Arsacid" in Chinese and can be romanized as On. Visitors to China who came from Arsacid-held territories often took the name An. In 2008, it was the 110th most common surname in the People's Republic of China, shared by over 1.7 million citizens. The surname is most common in Northern China. It is the 79th name on the Hundred Family Surnames poem. During the Song dynasty, another An (俺) was a Jewish Chinese surname, Related surname descendants Andrew the Apostle Source: Wikipedia (en)