Great One

The Great One or Great One may refer to:


 * The Great One (Planet of the Spiders), Queen of the Eight Legs encountered by the Third Doctor
 * Queen (The Eight Truths), the new Great One of the Eight Legs, encountered by the Eighth Doctor
 * The Great One (The Doctor's Daughter), a deity
 * Great One (People of the Trees), deities of the People of the Trees
 * King Vampire, who on occasion was referred to as "The Great One"