A telecommunications service provider (TSP) is a type of communications service provider that has traditionally provided telephone and similar services.

Telecom Service Providers (TSP) refers to a company that works within the telecommunications industry. Telecom Providers are a sector of Communications Service Providers (CSP), in charge of the electronic transport of data. CSPs include both public and private companies in industries such as telecom (land and wireless communications), cable, satellite, Internet Service Providers (ISPs), and managed service businesses.