Meaning and name origin
Theressa \th(e)-ressa, ther(es)-sa\ as a girl's name is of Greek origin, and the meaning of Theressa is "late summer". Theressa is a variant of Theresa (Greek); possibly a Greek place name: the first bearers of this name might have been from the Greek island of Therasia.
Theressa is a somewhat popular first name for females (#3344 out of 4276, Top 78%) but an uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the girl name Theressa and its variant forms. Popular variation forms ranked in the Top 1000/100 are Teresa (#719), Theresa and Teressa. (2014 statistics).