CTT – Correios de Portugal, S.A. (Portuguese pronunciation: [ˈse.te.te kuˈʁɐjuʒ ðɨ puɾtuˈɣal], lit.

[1] The acronym CTT comes from the company's former name (Portuguese: Correios, Telégrafos e Telefones, which means "Post, Telegraph and Telephone"), which was also the designation of postal services for the former Portuguese Colonies and is still used for CTT – Post of Macau today.

In 1991, CTT became a public limited company, and in December 2013 its shares were listed on Euronext Lisbon.

[2] In 2007, CTT began to offer a mobile phone service in Portugal, under the brand name Phone-ix.

[3] In 2014, CTT was privatized by the Portuguese government to raise money and comply with European Union requirements for its bailout.