China Tietong Telecommunications Corporation (abbr. CTT; Chinese: "中国铁通集团有限公司", or abbr. "中国铁通") is a major state-owned basic telecommunications operator in China. Its former name was China Railcom (China Railway Communication Corporation, Limited).
China Tietong's main areas of business are providing ADSL and dial-up internet services and selling backhaul on their nationwide backbone network, and the company also has a number of fixed-line telephone subscribers. Lacking access to each home, they work very closely with the cable television provider of each major city and usually offer lower price compared to its competitors. China Tietong is the third largest fixed-line internet service provider in China, after China Telecom and China Netcom.