Mary Teresa may refer to: Mary Teresa Bojaxhiu (1910–1997), Albanian-Indian Catholic nun Mary Teresa Collins (born 1960s), Irish co-founder, abuse survivor, activist, and human rights activist Mary Teresa Cullen (nun) (1866–1940), Irish nun Mary Teresa Josephine Webber, British palaeographer, medievalist, and academic Mary Teresa Norton (1875–1959), American politician Teresa Cowley (1852 or 1857–1914), Irish Sister of Mercy, Boer war nurse and teacher