Telekom Deutschland | Hrvatski Telekom (Crnogorski Telekom (76.53%) | HT Mostar (39.1%)) | Magyar Telekom | Makedonski Telekom | OTE (40%) | Slovak Telekom | Telekom Romania (54%) (via OTE) | BT (12%) | Magenta Telekom
T-Home | T-Mobile | T-Online | T-Systems | TVision (United States)
Croatia | Germany (Other) (Congstar) | Hungary | Montenegro | North Macedonia | Romania | Slovakia
Czech Republic | Netherlands1 (Ben, Tele2) (75%) | Poland | United States (Metro by T-Mobile)
Austria: Magenta | Greece: Cosmote (TV) (via OTE) | United Kingdom: EE (via BT)2
MobileStar | Omnipoint Communications | Powertel | SunCom | VoiceStream Wireless | Western Wireless Corporation | UPC Austria | Layer3 TV | Sprint
United Kingdom: T-Mobile UK2 | Bulgaria: Globul3 | Macedonia: Cosmofon4 | Albania: Telekom Albania5 | Philippines: Innove Communications6
1Co-owned with Tele2.
2Deutsche Telekom holds a 12% stake in BT, the present owner of EE. EE was formed by the merger of T-Mobile UK and Orange (UK).
3Acquired by Telenor. Now part of PPF Group.
4Acquired by Telekom Slovenije. Now part of A1 Telekom Austria Group.
5Acquired by Vivacom (which was acquired by United Group).
6Still exist, a subsidiary of Globe Telecom.