Cha

Cha is a relatively uncommon family name in Korea. The Yeonan Cha clan is the only clan. The founding ancestor was Cha Hyo-jeon, son of Ryoo Cha-dal (류차달) (10th century AD). Most of the clan's members live in Gyeongsang, Hwanghae, and P'yŏngan provinces. In South Korea in 2000, there were 180,589 people named Cha. It is derived from the Chinese surname Che, written in the same hanja.
Che (Chinese)

From the clan name Tsab or Tsaab associated with the Chinese character 張 (zhāng) (see Zhang).