List of Doctor Who Planets - T

T

• Ta is the headquarters of the Issigri Mining Corporation and features in the Second Doctor serial The Space Pirates. Its parent star is called Pliny.
• Tara is the setting of the Fourth Doctor serial The Androids of Tara. It is a planet resembling 19th century Earth, with lush green fields, attractive landscapes and Medieval type forests.
• Tarsius. In Only Human, Captain Jack Harkness recalls encountering a 'proto-humanoid Gloobi hybrid' in the 39th century wastes of this planet.
• Taurean Nomeworld One of the ten planets that had its entire population stolen – bar one person – in IDW's Doctor Who comic series.
• Telos is a colony world of the Cybermen, first seen in The Tomb of the Cybermen. It is an arid, mountainous planet that was once an ice planet until the temperatures on the planet rose. The native inhabitants were the Cryons.
• Tenten 10 The Decimal Planet. Mentioned in passing in the novel Prisoner of the Daleks.
• Terileptus the homeworld of the Terileptils, a race seen in the episode The Visitation. The name of their home planet is mentioned in the Virgin Missing Adventures novel The Dark Path.
• Terra Alpha is the location of Helen A's misery-free colony (or so some believe) in The Happiness Patrol. It is a gloomy planet with a yellow-purplish atmosphere. The conditions on the planet are terrible and demonstrations are frequent.
• Terra Beta and Terra Omega are both mentioned in The Happiness Patrol.
• Terradon was the origin of the starliner on Alzarius in the Fourth Doctor serial Full Circle.
• Tersurus is the planet on which Chancellor Goth met the dying Master prior to The Deadly Assassin. It was also the setting of the Comic Relief spoof episode The Curse of Fatal Death. The spoof described the Tersurons as the most gentle, yet most shunned race in the universe, because they communicated through carefully controlled "gastric emissions". They became extinct when they discovered fire.
• Tetrapyriarbus is the home planet of the Tetraps.
• Thegeros Another planet from The Greatest Show in the Galaxy.
• Therabenas A planet mentioned in The Ribos Operation.
• Therka A planet mentioned in the original series.
• Therra Another planet from The Greatest Show in the Galaxy.
• Thordon A planet mentioned in Mindwarp.
• Thoros Alpha and Thoros Beta are planets featured in Mindwarp. Thoros Beta is home to the Mentors, an amphibious race. The Doctor first encounters a Mentor – Sil – in Vengeance on Varos and mention of Thoros Beta is made in that serial. Thoros Alpha is a ringed planet seen in Thoros Beta's skyline and looks green through Thoros Beta's bright neon green atmosphere. Thoros Beta has bright neon pink oceans.
• Thrace is a planet mentioned in New Earth.
• Thuron is the home planet of the cyclopean Castelathurons, in the short story "Island of the Sirens."
• Tiermann's World The setting of the Tenth Doctor New Series Adventures novel Sick Building. A planet named after the professor that lives there, it is covered by wintry woods.
• Tigella Is a tropical planet that is the neighbouring planet to Zolfa Thura in Meglos.
• Tigus A planet visited in The Daleks' Master Plan. It is a young planet, still highly volcanic.
• Tisar A planet mentioned in The Daleks' Master Plan.
• Titan A moon of Saturn visited in The Invisible Enemy.
• Titan 3 – a desolate planetoid with a hostile climate on which the Sixth Doctor planned to become a hermit in The Twin Dilemma.
• Titania Hot gaseous planet, in a system between the secondary and tertiary arms of the Galaxy. Its moon, Dramos, is visited in the novel Burning Heart.
• Tivoli Mentioned in The God Complex as the most invaded planet in the galaxy. The anthem of Tivoli is 'Glory To "Insert Name Here"' and the town planning committee is planning to plant trees along all highways so that invading forces can march in the shade.
• Tokl A planet mentioned in Mindwarp.
• Toop was the home planet of the Quevvils and Mantodeans in the New Series Adventures novel Winner Takes All.

• Torajii Alpha A planet mentioned in the Tenth Doctor short story "42: Prologue". The sun of this planet is actually a living organism. In the episode 42, it is said to be located in the Torajii System.
• Traken in the Metulla Orionsis system was the densely forested homeworld to a race of pacifists and the centre of the Traken Union. It was first seen in The Keeper of Traken and destroyed by a wave of entropy in Logopolis. The Doctor's companion, Nyssa, was a native of Traken.
• Trieste Another planet from The Creature from the Pit. It is also mentioned in novel.
• Tranquela is the setting of part of The Ultimate Evil, one of the Missing Episodes that never reached production during Doctor Who's 1985 hiatus.
• Trenzalore A planet mentioned in the episode The Wedding Of River Song. It is said that on the fields of Trenzalore will come the fall of the Eleventh and the fall of the Silence. It is also where it is said that the oldest question in the universe, the question that must never be answered would finally be answered.
• Trion is the home planet of the Doctor's companion Turlough, featured in Planet of Fire.
• Triton: Homeworld of Balthazar, who was the planet's corsair king. Also the homeworld of the alien Waro in The Devil Goblins of Neptune. Triton is a real planetoid, the largest moon of Neptune.
• Tythonus (aka. Tithonus) is the home planet of Erato, the globulous green entity in the Fourth Doctor serial The Creature from the Pit.