Companhia Telefônica Brasileira
| Company type | Telecommunications |
|---|---|
| Predecessor | Rio de Janeiro & São Paulo Telephone Company |
| Founded | November 28, 1923 |
| Defunct | February 22, 1976 |
| Successor | Telecomunicações do Rio de Janeiro (Telerj) Telecomunicações de São Paulo (Telesp) |
| Headquarters | Rio de Janeiro, Rio de Janeiro Brazil |
| Owner | Brazilian Traction Light and Power Co. Ltd. (1923-1956) Brascan (1956-1966) Embratel (1966-1972) Telebras (1972-1976) |
Companhia Telefônica Brasileira (CTB) was a Brazilian fixed-line telephone company that provided services to the states of Rio de Janeiro and São Paulo, as well as Minas Gerais and Espírito Santo through its subsidiaries CTMG and CTES. Between 1972 and 1976, CTB belonged to the Telebras system.