Theresa Logar (born March 10, 1985), now Theresa Mullane, is an American former professional tennis player.

[1] A left-handed player from Rochester Hills, Michigan, Logar earned a wildcard into the women's singles main draw of the 2003 US Open by winning the USTA 18s National Championships and was beaten in the first round by Maria Kirilenko.

[2] Logar was a varsity tennis player at Stanford University while studying for a degree in international relations.

[3]