Gytha Ogg is a character from Terry Pratchett's Discworld series. She is a witch and a member of the Lancre Coven. Gytha is known for her practical approach to magic and her no-nonsense attitude. She is also renowned for her culinary skills and is an excellent cook. Gytha Ogg is often depicted as a strong, capable, and independent character, with a sharp sense of humor. She frequently appears in the Discworld series, particularly in the books featuring the Lancre witches.

Discworld is a comic fantasy book series written by the English author Terry Pratchett, set on the Discworld, a flat planet balanced on the backs of four elephants which in turn stand on the back of a giant turtle. The series began in 1983 with The Colour of Magic and continued until the final novel The Shepherd's Crown, which was published in 2015, following Pratchett's death. The books frequently parody or take inspiration from classic works, usually fantasy or science fiction, as well as mythology, folklore and fairy tales, and often use them for satirical parallels with cultural, political and scientific issues.