Theresia is the usual Dutch and German form of the name Teresa, and may refer to:
- Maria Theresia Ahlefeldt, (1755-1810) Danish composer
- Maria Theresia von Paradis, (1759-1824) Austrian pianist and composer
- Theresia of Dietrichstein (1768âÂÂ1822), German countess and noted beauty
- Edith Stein (1891âÂÂ1942), also known as St. Teresa Benedicta of the Cross, German Jewish philosopher, Roman Catholic nun, martyr and saint
- Theresia Bauer (born 1965), German politician
- Theresia Degener (born 1961), German jurist and professor of law
- Theresia Gouw (born 1968), American entrepreneur and venture capital investor
- Theresia Haidlmayr (1955âÂÂ2022), Austrian politician
- Theresia Kiesl (born 1963), Austrian retired middle distance runner
- Theresia van der Pant (1924âÂÂ2013), Dutch sculptor
- Theresia Singer (), opera singer