Quick answer
Teresa is a girl name.
Pronunciation: Spanish /te.ˈɾe.sa/; Italian /te.ˈrɛː.za/; Catalan /tə.ˈɾɛ.zə/; Polish /tɛ.ˈrɛ.sa/; Lithuanian /tʲɛ.rʲɛ.ˈsɐ/; Finnish /ˈte.re.sɑ/; German /te.ˈʁeː.za/; English /tə.ˈɹiː.sə/; English /tə.ˈɹiː.zə/.
Meaning and history
Form of Theresa used in several languages. Saint Teresa of Ávila was a 16th-century Spanish nun who reformed the Carmelite monasteries and wrote several spiritual books. It was also borne by the Albanian missionary Saint Teresa of Calcutta (1910-1997), better known as Mother Teresa, who worked with the poor in India. She adopted the name in honour of the French saint Thérèse of Lisieux, who is the patron of missionaries.
Notes and context
Usage: spanish, portuguese, italian, catalan, polish, lithuanian, finnish, german, swedish, norwegian, danish, english