Gytha is a synonym for the ground spider genus Eilica.
Gytha may also refer to:
Gytha of Wessex (1053/1061–c. 1098), daughter of King Harold II of England and spouse of Vladimir II Monomakh of Kyiv Gytha Thorkelsdóttir (c. 997 - c. 1069), Danish noblewoman, mother of King Harold Godwinson and of Edith of Wessex, grandmother of the former Gytha (of Wessex) Gytha Ogg, a character from Terry Pratchett's Discworld series
See also Githa (disambiguation)