Tanis, Greek name for the Semitic goddess Tanith Tanis is a Cree name meaning "daughter"
Tanis Judique, character in SinclairLewis's satirical novel 'Babbitt' (1922)
Title character of 'Tanis, the Sang-digger', an 1893 novel by Amelie Rives (Princess Troubetzkoy)
Tanis Half-Elven, a main character in the 'Dragonlance' series by Margaret Weiss and Tracy Hickman
Tanis, adorable little mummy in the movie 'Scooby-Doo and the Ghoul School'
Tanis, podcast named for the ancient Egyptian city of Tanis Anagram of "Saint"
(Patricia) Tannis, character in 'Borderlands' video games
Tannis Dumont, beautiful "half-breed" Canadian girl in L. M. Montgomery's short story 'Tannis of the Flats' (1920)
Tannis root, mysterious fictional herb used by Rosemary's devil-worshiping neighbors in 'Rosemary's Baby'