Gitta is a shortening (German and Scandinavian) of the English, Irish, and Scottish Bridget.
Gitta is also a familiar form (German) of the English, French, German, and Dutch Brigitte.
Gitta is also a derivative of the Czech, German, Indian, Polish, Slavic, and Yiddish Gita.
Gitta is also a derivative (Hungarian) of the English and Scottish Margaret.
Gitta is not often used as a baby girl name. It is not in the top 1000 names. In 2018, within the family of girl names directly related to Gitta, Margaret was the most frequently used.