Chunghwa Telecom Co., Ltd. (Chinese: 中華電信; pinyin: Zhōnghuá Diànxìn; Wade–Giles: Chung1-hua² Tien4-hsin4) (NYSE: CHT, TWSE: 2412) is the largest telecommunications company in Taiwan and the incumbent mobile, PSTN and broadband carrier there. It has its headquarters in Zhongzheng District, Taipei on the remains of the old Taipei Prison.