Wen is a Chinese surname.
simplified Chinese: 温; traditional Chinese: 溫; pinyin: Wēn), meaning "warm", is sometimes romanised as Wen or Vun in Taiwan, Ôn in Vietnamese Wan in Cantonese, or Wen/Won/Wan/Bong/Voon/Oon/woon/Man/Mun in Malaysia.
According to a 2013 study it was found to be the 104th-most common surname, shared by 2,170,000 people or 0.160% of the population, with the province with the most people being Guangdong.